[Diagnostic criteria for Parkinson’s disease in China] Required criteria: 1. Decreased movement: slow initiation of random movements. 2. Presence of at least 1 of the following features: ① muscle rigidity; ② resting tremor 4-6 HZ; ③ postural instability (not caused by primary visual, vestibular, cerebellar and proprioceptive dysfunction). Professor Liang Zhanhua indicates that the diagnosis of the disease also requires a professional Parkinson’s physician to make a final clinical diagnosis based on the patient’s clinical condition, excluding many influencing factors, and combining medication, imaging, and time observation.