diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..20fc88a
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 deltaeecs
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
index 92e4829..8c87e4b 100644
--- a/README.md
+++ b/README.md
@@ -143,12 +143,12 @@ mpiexec -n 4 .\csr4mpi_bench_spmv.exe synthetic_12k10_sym_lower.mtx 20
 - `bench/bench_large_spmv.cpp`：SpMV 性能基准。
 - `tests/`：GoogleTest 单元与 MPI 分布式测试。
 
-## 后续改进方向
+## TODO
 
-- 更高效装配（行内列索引二分/哈希）。
-- SpMM 进一步通信压缩与重用。
-- 更多矩阵与可复现基准统计 (CSV)。
+- [ ] 更高效装配（行内列索引二分/哈希）
+- [ ] SpMM 进一步通信压缩与重用
+- [ ] 更多矩阵与可复现基准统计 (CSV)
 
 ## License
 
-本项目当前为实验性质；请在引用/分发前确认后续 License 或附加条款更新。
+本项目基于 [MIT License](LICENSE) 开源。