diff --git a/examples/spo/README.md b/examples/spo/README.md
index 273bbc2df..e52309c2f 100644
--- a/examples/spo/README.md
+++ b/examples/spo/README.md
@@ -16,7 +16,7 @@ ## ✨ Core Advantages
 - ⚡ **Universal Adaptation** - _Closed & open-ended tasks supported_
 - 🔄 **Self-Evolving** - _Auto-optimization via LLM-as-judge mechanism_
 
-[Read our paper](./Self-Supervised Prompt Optimization.pdf)
+[Read our paper on arXiv](https://arxiv.org/pdf/2502.06855)
 
 ## 📊 Experiment
 
@@ -169,10 +169,12 @@ ## Citation
 
 ```
 @misc{xiang2025spo,
-    title = {Self-Supervised Prompt Optimization},
-    author = {Xiang, Jinyu and Zhang, Jiayi and Yu, Zhaoyang and Teng, Fengwei and Tu, Jinhao and Liang, Xinbing and Hong, Sirui and Wu, Chenglin and Luo, Yuyu},
-    year = {2025},
-    url = {https://github.com/geekan/MetaGPT/blob/main/examples/spo/Self-Supervised Prompt Optimization.pdf},
-    note = {Code available at: https://github.com/geekan/MetaGPT/blob/main/examples/spo}
+      title={Self-Supervised Prompt Optimization}, 
+      author={Jinyu Xiang and Jiayi Zhang and Zhaoyang Yu and Fengwei Teng and Jinhao Tu and Xinbing Liang and Sirui Hong and Chenglin Wu and Yuyu Luo},
+      year={2025},
+      eprint={2502.06855},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2502.06855}, 
 }
 ```
\ No newline at end of file
diff --git a/examples/spo/Self-Supervised Prompt Optimization.pdf b/examples/spo/Self-Supervised Prompt Optimization.pdf
deleted file mode 100644
index 79d24e329..000000000
Binary files a/examples/spo/Self-Supervised Prompt Optimization.pdf and /dev/null differ
diff --git a/metagpt/ext/spo/app.py b/metagpt/ext/spo/app.py
index ddab67777..563eb92ff 100644
--- a/metagpt/ext/spo/app.py
+++ b/metagpt/ext/spo/app.py
@@ -184,6 +184,46 @@ def main():
 
                 st.success("Optimization completed!")
 
+                st.header("Optimization Results")
+
+                prompt_path = f"{optimizer.root_path}/prompts"
+                result_data = optimizer.data_utils.load_results(prompt_path)
+
+                for result in result_data:
+                    round_num = result["round"]
+                    success = result["succeed"]
+                    prompt = result["prompt"]
+
+                    with st.expander(f"Round {round_num} {':white_check_mark:' if success else ':x:'}"):
+                        st.markdown("**Prompt:**")
+                        st.code(prompt, language="text")
+                        st.markdown("<br>", unsafe_allow_html=True)
+
+                        col1, col2 = st.columns(2)
+                        with col1:
+                            st.markdown(f"**Status:** {'Success ✅ ' if success else 'Failed ❌ '}")
+                        with col2:
+                            st.markdown(f"**Tokens:** {result['tokens']}")
+
+                        st.markdown("**Answers:**")
+                        for idx, answer in enumerate(result["answers"]):
+                            st.markdown(f"**Question {idx + 1}:**")
+                            st.text(answer["question"])
+                            st.markdown("**Answer:**")
+                            st.text(answer["answer"])
+                            st.markdown("---")
+
+                # Summary
+                success_count = sum(1 for r in result_data if r["succeed"])
+                total_rounds = len(result_data)
+
+                st.markdown("### Summary")
+                col1, col2 = st.columns(2)
+                with col1:
+                    st.metric("Total Rounds", total_rounds)
+                with col2:
+                    st.metric("Successful Rounds", success_count)
+
             except Exception as e:
                 st.error(f"An error occurred: {str(e)}")
                 _logger.error(f"Error during optimization: {str(e)}")