diff --git a/tool/rawstr4c/bin/rawstr4c b/tool/rawstr4c/bin/rawstr4c
index ea3921d..fc7fafb 100644
--- a/tool/rawstr4c/bin/rawstr4c
+++ b/tool/rawstr4c/bin/rawstr4c
@@ -14,13 +14,13 @@
 #             Raw strings for the C programming language
 # ---------------------------------------------------------------
 
-use Parser;
-use Generator;
-use Version;
+use Rawstr4c::Parser;
+use Rawstr4c::Generator;
+use Rawstr4c::Version;
 
 sub USAGE() {
   print qq:to/END/;
-    rawstr4c: Raw String for C (GPLv3+) v{Version::VERSION}-{Version::RELEASE_DATE}
+    rawstr4c: Raw String for C (GPLv3+) v{Rawstr4c::Version::VERSION}-{Rawstr4c::Version::RELEASE_DATE}
 
     Usage: rawstr4c [options] <FILE.md|DIR>
 
diff --git a/tool/rawstr4c/lib/Config.rakumod b/tool/rawstr4c/lib/Rawstr4c/Config.rakumod
similarity index 97%
rename from tool/rawstr4c/lib/Config.rakumod
rename to tool/rawstr4c/lib/Rawstr4c/Config.rakumod
index 890e6db..8f3bc03 100644
--- a/tool/rawstr4c/lib/Config.rakumod
+++ b/tool/rawstr4c/lib/Rawstr4c/Config.rakumod
@@ -10,14 +10,14 @@
 # Represent a section's working configuration
 # ---------------------------------------------------------------
 
-use Parser;
+use Rawstr4c::Parser;
 
-unit module Config;
+unit module Rawstr4c::Config;
 
 #| 一个 section 的配置 (基于层次化结构而形成的最终真正生效的配置)
 class SectionConfig {
 
-  has Parser::Section $.section;
+  has Rawstr4c::Parser::Section $.section;
 
   method new($section) {
     self.bless(:$section);
diff --git a/tool/rawstr4c/lib/Generator.rakumod b/tool/rawstr4c/lib/Rawstr4c/Generator.rakumod
similarity index 95%
rename from tool/rawstr4c/lib/Generator.rakumod
rename to tool/rawstr4c/lib/Rawstr4c/Generator.rakumod
index 2dfb20a..76c1472 100644
--- a/tool/rawstr4c/lib/Generator.rakumod
+++ b/tool/rawstr4c/lib/Rawstr4c/Generator.rakumod
@@ -10,11 +10,11 @@
 # Generates C code from rawstr4c configuration
 # ---------------------------------------------------------------
 
-unit module Generator;
+unit module Rawstr4c::Generator;
 
-use Parser;
-use Config;
-use Version;
+use Rawstr4c::Parser;
+use Rawstr4c::Config;
+use Rawstr4c::Version;
 
 my class CStringConverter {
 
@@ -198,11 +198,11 @@ my class CVariableGenerator {
 
 class Generator {
 
-  has Bool                   $!enable-debug = False; # 是否启用调试模式
-  has Parser::Parser         $.parser;
-  has CStringConverter       $.string-converter;
-  has CVariableNameGenerator $.varname-generator;
-  has CVariableGenerator     $.variable-generator;
+  has Bool                     $!enable-debug = False; # 是否启用调试模式
+  has Rawstr4c::Parser::Parser $.parser;
+  has CStringConverter         $.string-converter;
+  has CVariableNameGenerator   $.varname-generator;
+  has CVariableGenerator       $.variable-generator;
 
   method new($parser) {
     self.bless(
diff --git a/tool/rawstr4c/lib/Parser.rakumod b/tool/rawstr4c/lib/Rawstr4c/Parser.rakumod
similarity index 99%
rename from tool/rawstr4c/lib/Parser.rakumod
rename to tool/rawstr4c/lib/Rawstr4c/Parser.rakumod
index 3747aab..f01f621 100644
--- a/tool/rawstr4c/lib/Parser.rakumod
+++ b/tool/rawstr4c/lib/Rawstr4c/Parser.rakumod
@@ -10,7 +10,7 @@
 # rawstr4c.md parsing
 # ---------------------------------------------------------------
 
-unit module Parser;
+unit module Rawstr4c::Parser;
 
 #| 不能用 Bool，只能用 Boolean
 my enum ConfigItem's-ValueType < RS4C-Nil RS4C-String RS4C-Mode RS4C-Bool>;
diff --git a/tool/rawstr4c/lib/Version.rakumod b/tool/rawstr4c/lib/Rawstr4c/Version.rakumod
similarity index 97%
rename from tool/rawstr4c/lib/Version.rakumod
rename to tool/rawstr4c/lib/Rawstr4c/Version.rakumod
index 622e391..ff79ca3 100644
--- a/tool/rawstr4c/lib/Version.rakumod
+++ b/tool/rawstr4c/lib/Rawstr4c/Version.rakumod
@@ -8,7 +8,7 @@
 # Last Modified : <2025-07-16>
 # ---------------------------------------------------------------
 
-unit module Version;
+unit module Rawstr4c::Version;
 
 constant VERSION = "0.2.1.0";
 constant RELEASE_DATE = "2025/07/16";