diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..45ff791
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+# MSVC Windows builds of cjc generate these, which store debugging information
+*.cjo
+*.exe
+*.bchir2
+target/
+cjpm.lock
+.vscode/
+.cache/
\ No newline at end of file
diff --git a/samples/hello_world/main.cj b/samples/hello_world/main.cj
new file mode 100644
index 0000000..95affde
--- /dev/null
+++ b/samples/hello_world/main.cj
@@ -0,0 +1,5 @@
+// main函数最先执行
+main() {
+    // 打印Hello World!
+    println("Hello World!");
+}
\ No newline at end of file