diff --git a/my-blog/config.toml b/my-blog/config.toml
index a41461f..eb52713 100644
--- a/my-blog/config.toml
+++ b/my-blog/config.toml
@@ -7,6 +7,7 @@ author = "syui"
 
 [build]
 highlight_code = true
+highlight_theme = "Monokai"
 minify = false
 
 [ai]
diff --git a/src/config.rs b/src/config.rs
index 6511fa1..54ca603 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -23,6 +23,7 @@ pub struct SiteConfig {
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct BuildConfig {
     pub highlight_code: bool,
+    pub highlight_theme: Option<String>,
     pub minify: bool,
 }
 
@@ -146,6 +147,7 @@ impl Default for Config {
             },
             build: BuildConfig {
                 highlight_code: true,
+                highlight_theme: Some("Monokai".to_string()),
                 minify: false,
             },
             ai: Some(AiConfig {
diff --git a/src/generator.rs b/src/generator.rs
index 6b15118..1d5e5b1 100644
--- a/src/generator.rs
+++ b/src/generator.rs
@@ -18,7 +18,7 @@ pub struct Generator {
 
 impl Generator {
     pub fn new(base_path: PathBuf, config: Config) -> Result<Self> {
-        let markdown_processor = MarkdownProcessor::new(config.build.highlight_code);
+        let markdown_processor = MarkdownProcessor::new(config.build.highlight_code, config.build.highlight_theme.clone());
         let template_engine = TemplateEngine::new(base_path.join("templates"))?;
         
         let ai_manager = if let Some(ref ai_config) = config.ai {
diff --git a/src/markdown.rs b/src/markdown.rs
index 62370cd..b030a7c 100644
--- a/src/markdown.rs
+++ b/src/markdown.rs
@@ -9,14 +9,16 @@ use serde_json::Value;
 
 pub struct MarkdownProcessor {
     highlight_code: bool,
+    highlight_theme: String,
     syntax_set: SyntaxSet,
     theme_set: ThemeSet,
 }
 
 impl MarkdownProcessor {
-    pub fn new(highlight_code: bool) -> Self {
+    pub fn new(highlight_code: bool, highlight_theme: Option<String>) -> Self {
         Self {
             highlight_code,
+            highlight_theme: highlight_theme.unwrap_or_else(|| "Monokai".to_string()),
             syntax_set: SyntaxSet::load_defaults_newlines(),
             theme_set: ThemeSet::load_defaults(),
         }
@@ -86,7 +88,11 @@ impl MarkdownProcessor {
         let parser = Parser::new_ext(content, options);
         let mut html_output = String::new();
         let mut code_block = None;
-        let theme = &self.theme_set.themes["base16-ocean.dark"];
+        let theme = self.theme_set.themes.get(&self.highlight_theme)
+            .or_else(|| self.theme_set.themes.get("Monokai"))
+            .or_else(|| self.theme_set.themes.get("InspiredGitHub"))
+            .or_else(|| self.theme_set.themes.get("base16-ocean.dark"))
+            .unwrap_or_else(|| self.theme_set.themes.values().next().unwrap());
 
         let mut events = Vec::new();
         for event in parser {