Hyperuricemia: Because the patient's own uric acid metabolism is abnormal, it is necessary to limit the high purine diet, especially for patients who have developed gout, and freshwater fish such as Qingjiang fish are not suitable for eating Qingjiang fish because of their high purine content.

Hemorrhagic diseases: For example, patients with hemophilia and henoch-schonlein purpura need to take a small amount of eicosapentaenoic acid in Qingjiang fish, which can inhibit platelet aggregation and aggravate bleeding symptoms.