ProactiveAgent is a proactive agent project powered by a Large Language Model (LLM), designed to build an intelligent agent that predicts user needs and provides proactive help. This project achieves its goals through data collection and generation pipelines, automatic evaluators, and training agents. Key advantages of ProactiveAgent include environmental awareness, annotation assistance, dynamic data generation, and construction pipelines, with a reward model achieving an F1 score of 0.918 on the test set, indicating strong performance. This product is suitable for programming, writing, and daily life scenarios, and adheres to the Apache License 2.0.