diff --git a/Makefile b/Makefile
index 13e7c50..34f1279 100644
--- a/Makefile
+++ b/Makefile
@@ -21,7 +21,8 @@ KERNEL_CPP = kernel/entry.cpp kernel/main.cpp kernel/serial.cpp kernel/fs.cpp \
              kernel/interrupt/gdt.cpp kernel/interrupt/idt.cpp \
              kernel/interrupt/pic.cpp kernel/interrupt/pit.cpp \
              graphics/context.cpp graphics/draw.cpp \
-             fonts/pixel_font.cpp
+             fonts/pixel_font.cpp \
+             desktop/prepare.cpp
 KERNEL_ASM = kernel/scheduler/context_switch.S kernel/interrupt/isr.S kernel/interrupt/idt_helpers.S
 KERNEL_OBJ = $(KERNEL_CPP:%.cpp=build/%.o) $(KERNEL_ASM:%.S=build/%.o)
 
@@ -47,7 +48,8 @@ all: _bd $(EFI_OBJ) $(BOOT_OBJ) $(KERNEL_OBJ)
 	@echo "Done."
 
 _bd:
-	@mkdir -p build/graphics build/kernel build/fonts build/kernel/memory \
+	@mkdir -p build/graphics build/kernel build/fonts build/desktop \
+	          build/kernel/memory \
 	          build/kernel/scheduler build/kernel/interrupt \
 	          build/efi/lib build/efi/lib/x86_64 build/efi/lib/runtime build/efi/gnuefi
 
@@ -117,6 +119,10 @@ build/fonts/%.o: fonts/%.cpp | _bd
 	@echo "Compile CPP $<"
 	@g++ $(KERNEL_CXXFLAGS) -c $< -o $@
 
+build/desktop/%.o: desktop/%.cpp | _bd
+	@echo "Compile CPP $<"
+	@g++ $(KERNEL_CXXFLAGS) -c $< -o $@
+
 vdir: all
 	@mkdir -p vdir/EFI/BOOT
 	@cp build/BOOTX64.EFI vdir/EFI/BOOT
diff --git a/desktop/prepare.cpp b/desktop/prepare.cpp
new file mode 100644
index 0000000..054e201
--- /dev/null
+++ b/desktop/prepare.cpp
@@ -0,0 +1,9 @@
+#include <graphics/draw.h>
+
+void prepare(UINT32 width, UINT32 height, COLOR_RGB color) {
+    for (UINT32 i = 0; i < height; i++) {
+        for (UINT32 j = 0; j < width; j++) {
+            draw_pixel(i, j, color);
+        }
+    }
+}
\ No newline at end of file
diff --git a/fonts/pixel_font.cpp b/fonts/pixel_font.cpp
index 188dee3..aac5224 100644
--- a/fonts/pixel_font.cpp
+++ b/fonts/pixel_font.cpp
@@ -12,7 +12,7 @@ void pf_reset_position(void) {
     pf_y = 1;
 }
 
-void pf_print_char(char c, unsigned int basex, unsigned int basey, EFI_GRAPHICS_OUTPUT_BLT_PIXEL color) {
+void pf_print_char(char c, unsigned int basex, unsigned int basey, COLOR_RGB color) {
     for (unsigned int y = 0; y < 16; y++) {
         unsigned char data = hankaku_pixels[c][y];
         for (int x = 7; x >= 0; x--) {
@@ -31,7 +31,7 @@ void pf_print_char(char c, unsigned int basex, unsigned int basey, EFI_GRAPHICS_
     }
 }
 
-void pf_print(const char* text, EFI_GRAPHICS_OUTPUT_BLT_PIXEL color) {
+void pf_print(const char* text, COLOR_RGB color) {
     for (unsigned int i = 0; i < strlen(text); i++) {
         char c = text[i];
         if (c == '\n') {
diff --git a/graphics/context.cpp b/graphics/context.cpp
index c90894a..29c8d5a 100644
--- a/graphics/context.cpp
+++ b/graphics/context.cpp
@@ -1,4 +1,5 @@
 #include <graphics/context.h>
+#include <graphics/draw.h>
 
 gfx_context g_gfx;
 
@@ -6,10 +7,10 @@ void gfx_init(EFI_GRAPHICS_OUTPUT_PROTOCOL *GOP) {
     g_gfx.GOP = GOP;
     g_gfx.hr = GOP->Mode->Info->HorizontalResolution;
     g_gfx.vr = GOP->Mode->Info->VerticalResolution;
-    g_gfx.base = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) GOP->Mode->FrameBufferBase;
+    g_gfx.base = (COLOR_RGB *) GOP->Mode->FrameBufferBase;
 }
 
 void gfx_clear(void) {
-    EFI_GRAPHICS_OUTPUT_BLT_PIXEL black = {0, 0, 0, 0};
+    COLOR_RGB black = {0, 0, 0, 0};
     g_gfx.GOP->Blt(g_gfx.GOP, &black, EfiBltVideoFill, 0, 0, 0, 0, g_gfx.hr, g_gfx.vr, 0);
 }
\ No newline at end of file
diff --git a/graphics/draw.cpp b/graphics/draw.cpp
index 0fa9a20..c6cf664 100644
--- a/graphics/draw.cpp
+++ b/graphics/draw.cpp
@@ -1,7 +1,7 @@
 #include <graphics/draw.h>
 
-void draw_pixel(unsigned int x, unsigned int y, EFI_GRAPHICS_OUTPUT_BLT_PIXEL color) {
-    EFI_GRAPHICS_OUTPUT_BLT_PIXEL *p = g_gfx.base + (g_gfx.hr * y) + x;
+void draw_pixel(unsigned int x, unsigned int y, COLOR_RGB color) {
+    COLOR_RGB *p = g_gfx.base + (g_gfx.hr * y) + x;
 
     p->Blue = color.Blue;
     p->Green = color.Green;
diff --git a/include/common.h b/include/common.h
index 11a9603..f158365 100644
--- a/include/common.h
+++ b/include/common.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #define ASM asm volatile
+#define COLOR_RGB EFI_GRAPHICS_OUTPUT_BLT_PIXEL
 
 static unsigned int strlen(const char* arr) { // 获取string长度
     int i = 0;
diff --git a/include/desktop/prepare.h b/include/desktop/prepare.h
new file mode 100644
index 0000000..4214902
--- /dev/null
+++ b/include/desktop/prepare.h
@@ -0,0 +1,3 @@
+#pragma once
+
+void prepare(UINT32 width, UINT32 height, COLOR_RGB color  = {144, 238, 145});
\ No newline at end of file
diff --git a/include/fonts/pixel_font.h b/include/fonts/pixel_font.h
index 353328e..ca362cb 100644
--- a/include/fonts/pixel_font.h
+++ b/include/fonts/pixel_font.h
@@ -1,8 +1,9 @@
 #pragma once
 
 #include <graphics/context.h>
+#include <graphics/draw.h>
 
 void pf_print_char(char c, unsigned int basex, unsigned int basey, 
-        EFI_GRAPHICS_OUTPUT_BLT_PIXEL color = {255, 255, 255, 255});                         // Pixel Font 打印字符
-void pf_print(const char* text, EFI_GRAPHICS_OUTPUT_BLT_PIXEL color = {255, 255, 255, 255}); // Pixel Font 打印string
-void pf_reset_position(void);                                                                // 重设Pixel Font Cursor位置
\ No newline at end of file
+        COLOR_RGB color = {255, 255, 255, 255});                         // Pixel Font 打印字符
+void pf_print(const char* text, COLOR_RGB color = {255, 255, 255, 255}); // Pixel Font 打印string
+void pf_reset_position(void);                                            // 重设Pixel Font Cursor位置
\ No newline at end of file
diff --git a/include/graphics/context.h b/include/graphics/context.h
index 90166c7..8433e8c 100644
--- a/include/graphics/context.h
+++ b/include/graphics/context.h
@@ -3,12 +3,13 @@
 // 这个文件存在的目的是让graphics的draw功能不用每次传 GOP hr vr base
 
 #include <efi.h>
+#include <common.h>
 
 struct gfx_context {
     EFI_GRAPHICS_OUTPUT_PROTOCOL *GOP;
     unsigned int hr;
     unsigned int vr;
-    EFI_GRAPHICS_OUTPUT_BLT_PIXEL *base;
+    COLOR_RGB *base;
 };
 
 extern gfx_context g_gfx;
diff --git a/include/graphics/draw.h b/include/graphics/draw.h
index 5b08c9e..d1f2a4a 100644
--- a/include/graphics/draw.h
+++ b/include/graphics/draw.h
@@ -3,4 +3,6 @@
 #include <efi.h>
 #include <graphics/context.h>
 
-void draw_pixel(unsigned int x, unsigned int y, EFI_GRAPHICS_OUTPUT_BLT_PIXEL color); // 画像素
\ No newline at end of file
+#define COLOR_RGB EFI_GRAPHICS_OUTPUT_BLT_PIXEL
+
+void draw_pixel(unsigned int x, unsigned int y, COLOR_RGB color); // 画像素
\ No newline at end of file
diff --git a/include/fs.h b/include/kernel/fs.h
similarity index 100%
rename from include/fs.h
rename to include/kernel/fs.h
diff --git a/include/gdt.h b/include/kernel/gdt.h
similarity index 100%
rename from include/gdt.h
rename to include/kernel/gdt.h
diff --git a/include/idt.h b/include/kernel/idt.h
similarity index 100%
rename from include/idt.h
rename to include/kernel/idt.h
diff --git a/include/pic.h b/include/kernel/pic.h
similarity index 100%
rename from include/pic.h
rename to include/kernel/pic.h
diff --git a/include/pit.h b/include/kernel/pit.h
similarity index 100%
rename from include/pit.h
rename to include/kernel/pit.h
diff --git a/include/scheduler.h b/include/kernel/scheduler.h
similarity index 100%
rename from include/scheduler.h
rename to include/kernel/scheduler.h
diff --git a/include/serial.h b/include/kernel/serial.h
similarity index 100%
rename from include/serial.h
rename to include/kernel/serial.h
diff --git a/kernel/fs.cpp b/kernel/fs.cpp
index 87eaed1..e93589b 100644
--- a/kernel/fs.cpp
+++ b/kernel/fs.cpp
@@ -1,5 +1,5 @@
-#include <fs.h>
-#include <serial.h>
+#include <kernel/fs.h>
+#include <kernel/serial.h>
 #include <memory/heap.h>
 #include <common.h>
 
diff --git a/kernel/interrupt/gdt.cpp b/kernel/interrupt/gdt.cpp
index f74da9a..fbd504d 100644
--- a/kernel/interrupt/gdt.cpp
+++ b/kernel/interrupt/gdt.cpp
@@ -1,6 +1,6 @@
-#include <gdt.h>
+#include <kernel/gdt.h>
 #include <common.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 static gdt_entry g_gdt[7];  // 5 segments + TSS (2 entries)
 static gdt_ptr   g_gdt_ptr;
diff --git a/kernel/interrupt/idt.cpp b/kernel/interrupt/idt.cpp
index 70ae035..a31a565 100644
--- a/kernel/interrupt/idt.cpp
+++ b/kernel/interrupt/idt.cpp
@@ -1,7 +1,7 @@
-#include <idt.h>
+#include <kernel/idt.h>
 #include <common.h>
-#include <pic.h>
-#include <serial.h>
+#include <kernel/pic.h>
+#include <kernel/serial.h>
 
 // Defined in isr.S — 256 ISR stubs
 extern "C" void* isr_stub_table[256];
diff --git a/kernel/interrupt/pic.cpp b/kernel/interrupt/pic.cpp
index 6fb5d27..dc40ea2 100644
--- a/kernel/interrupt/pic.cpp
+++ b/kernel/interrupt/pic.cpp
@@ -1,6 +1,6 @@
-#include <pic.h>
+#include <kernel/pic.h>
 #include <common.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 static inline void outb(UINT16 port, UINT8 val) {
     ASM("outb %0, %1" : : "a"(val), "Nd"(port));
diff --git a/kernel/interrupt/pit.cpp b/kernel/interrupt/pit.cpp
index 1389506..955bc7a 100644
--- a/kernel/interrupt/pit.cpp
+++ b/kernel/interrupt/pit.cpp
@@ -1,7 +1,7 @@
-#include <pit.h>
+#include <kernel/pit.h>
 #include <common.h>
-#include <pic.h>
-#include <serial.h>
+#include <kernel/pic.h>
+#include <kernel/serial.h>
 
 static inline void outb(UINT16 port, UINT8 val) {
     ASM("outb %0, %1" : : "a"(val), "Nd"(port));
diff --git a/kernel/main.cpp b/kernel/main.cpp
index bbea2fb..97af6be 100644
--- a/kernel/main.cpp
+++ b/kernel/main.cpp
@@ -2,16 +2,17 @@
 #include <graphics/context.h>
 #include <graphics/draw.h>
 #include <fonts/pixel_font.h>
-#include <serial.h>
+#include <kernel/serial.h>
 #include <common.h>
 #include <memory/pmm.h>
 #include <memory/heap.h>
-#include <scheduler.h>
-#include <fs.h>
-#include <gdt.h>
-#include <idt.h>
-#include <pic.h>
-#include <pit.h>
+#include <kernel/scheduler.h>
+#include <kernel/fs.h>
+#include <kernel/gdt.h>
+#include <kernel/idt.h>
+#include <kernel/pic.h>
+#include <kernel/pit.h>
+#include <desktop/prepare.h>
 
 extern EFI_SYSTEM_TABLE *ST;
 
@@ -131,6 +132,8 @@ extern "C" void kernel_main() {
     pf_print("Welcome to Sylva OS!\n");
     serial_write(" Kernel prepared well.\n");
 
+    prepare((UINT32) g_gfx.vr, (UINT32) g_gfx.hr);
+
     // --- Interrupt infrastructure ---
     serial_write("Sylva: init GDT...\n");
     gdt_init();
diff --git a/kernel/memory/heap.cpp b/kernel/memory/heap.cpp
index 5053c7c..92e000a 100644
--- a/kernel/memory/heap.cpp
+++ b/kernel/memory/heap.cpp
@@ -1,6 +1,6 @@
 #include <memory/heap.h>
 #include <memory/pmm.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 struct heap_block {
     UINTN  size;   // includes header; bit 0 = 1 used, 0 free
diff --git a/kernel/memory/pmm.cpp b/kernel/memory/pmm.cpp
index 85ae72a..1ff308f 100644
--- a/kernel/memory/pmm.cpp
+++ b/kernel/memory/pmm.cpp
@@ -1,5 +1,5 @@
 #include <memory/pmm.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 extern EFI_SYSTEM_TABLE *ST;
 
diff --git a/kernel/scheduler/scheduler.cpp b/kernel/scheduler/scheduler.cpp
index 09a8b64..bce0504 100644
--- a/kernel/scheduler/scheduler.cpp
+++ b/kernel/scheduler/scheduler.cpp
@@ -1,10 +1,10 @@
-#include <scheduler.h>
-#include <idt.h>
-#include <pic.h>
+#include <kernel/scheduler.h>
+#include <kernel/idt.h>
+#include <kernel/pic.h>
 #include <memory/heap.h>
 #include <memory/pmm.h>
 #include <common.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 // Assembly: context_switch(UINT64* old_rsp, UINT64 new_rsp)
 extern "C" void context_switch(UINT64* old_rsp, UINT64 new_rsp);
diff --git a/kernel/serial.cpp b/kernel/serial.cpp
index 4681623..6a327a4 100644
--- a/kernel/serial.cpp
+++ b/kernel/serial.cpp
@@ -1,4 +1,4 @@
-#include <serial.h>
+#include <kernel/serial.h>
 
 extern EFI_SYSTEM_TABLE *ST;