diff --git a/docs/.vitepress/config.mts b/docs/.vitepress/config.mts
index a842f70..156907c 100644
--- a/docs/.vitepress/config.mts
+++ b/docs/.vitepress/config.mts
@@ -234,6 +234,10 @@ export default defineConfig({
               text: "HackerScripts",
               link: "/reference/HackerScripts",
             },
+            {
+              text: "占位符",
+              link: "/reference/Placeholder",
+            },
           ],
         },
       ],
diff --git a/docs/reference/Placeholder.md b/docs/reference/Placeholder.md
new file mode 100644
index 0000000..51ca8c7
--- /dev/null
+++ b/docs/reference/Placeholder.md
@@ -0,0 +1,66 @@
+# 自替换占位符
+**自替换占位符**是指在Hacknet中会被自动替换成特定内容的标识  
+
+自替换占位符的结构为:#<标识符,不包含尖括号>#,如#BINARY#  
+
+可用的标识符有:
+- `BINARY` 垃圾二进制内容(2000字符)
+- `BINARYSMALL` 较少的垃圾二进制内容(1000字符)
+- `PLAYER_IP` 玩家IP地址
+- `PLAYERNAME` 玩家名
+- `RANDOM_IP` 一个随机的IP
+
+以及一些文件的标识符:
+- `SSH_CRACK` SSHCrack程序
+- `FTP_CRACK` 原版FTP破解程序
+- `WEB_CRACK` Web(80)破解程序
+- `SMTP_CRACK` SMTP破解程序
+- `SQL_CRACK` SQL破解程序
+- `HEXCLOCK_EXE` HexClock.exe程序
+- `CLOCK_PROGRAM` Clock.exe程序
+- `DECYPHER_PROGRAM` DEC解密程序
+- `DECHEAD_PROGRAM` DEC获取头信息程序
+- `MEDICAL_PROGRAM` KBT(104)端口破解程序
+- `THEMECHANGER_EXE` 主题更改器,ThemeChanger.exe
+- `EOS_SCANNER_EXE` eos设备扫描程序
+- `SECURITYTRACER_PROGRAM` 开局的SecurityTracer.exe(好东西,可以很快地停止trace)
+- `TRACEKILL_EXE` Vapor给你的TraceKill.exe
+- `EXT_SEQUENCER_EXE` 在扩展中可以使用的Sequencer.exe,在ExtensionInfo.xml中定义其属性
+
+
+DLC特供:
+- `TORRENT_EXE` Torrent(6881)破解程序
+- `SSL_EXE` SSL(443)破解程序
+- `FTP_FAST_EXE` DLC更快的FTP破解程序
+- `SIGNAL_SCRAMBLER_EXE` SignalScrambler.exe,占用内存来延长trace的程序
+- `MEM_FORENSICS_EXE` 内存转储查看程序
+- `MEM_DUMP_GENERATOR` 内存转储生成工具
+- `PACIFIC_EXE` 飞机端口(192)破解程序
+- `NETMAP_ORGANIZER_EXE` netmap排列程序
+- `SHELL_CONTROLLER_EXE` 原版不存在的Comshell.exe,快速操作shell的程序
+- `NOTES_DUMPER_EXE` 能从本地文件读取笔记的程序
+- `DLC_MUSIC_EXE` DLC调音乐程序
+- `CLOCK_V2_EXE` 下文主题中显示的ClockV2
+- `SHELL_OPENER_EXE` 原版不存在,快速打开shell的程序
+
+一些主题附上图片:  
+`WHITE_THEME` :  
+![](./assets/White_Theme.png)  
+
+`GREEN_THEME` :  
+![](./assets/Green_Theme.png)  
+
+`YELLOW_THEME` :  
+![](./assets/Yellow_Theme.png)  
+
+`TEAL_THEME` :  
+![](./assets/Teal_Theme.png)  
+
+`BASE_THEME` :  
+![](./assets/Base_Theme.png)  
+
+`PURPLE_THEME` :  
+![](./assets/Purple_Theme.png)  
+
+`MINT_THEME` :  
+![](./assets/Mint_Theme.png)
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