This paper proposes Refine-IQA, a novel framework that applies reinforcement learning fine-tuning (RFT) to low-level vision domains, particularly image quality assessment (IQA). To address the rule-based reward and low-level visual quality recognition shortcomings of existing RFT-based IQA methods, the Refine-Perception-20K dataset is constructed and a multi-task reward function is designed to enhance the model's visual quality recognition. In the second stage, a probability difference compensation strategy is introduced to supervise the "thinking" process. As a result, Refine-IQA achieves excellent performance on both recognition and scoring tasks, and in particular, it excels on quality interpretation benchmarks.