Placebo group:Ganmao Shuangjie Granule Simulator, 2 sachets at a time, 3 times a day, take it with boiling water in the morning, middle and evening.

A multi-center, randomized, double-blind, dose-parallel, placebo-controlled phase II clinical trial to evaluate the effectiveness and safety of Ganmao Shuangjie Granules in the treatment of influenza (external cold, internal heat syndrome)

A multi-center, randomized, double-blind, dose-parallel, placebo-controlled phase II clinical trial to evaluate the effectiveness and safety of Ganmao Shuangjie Granules in the treatment of influenza (external cold, internal heat syndrome)