The three main signs of meningeal stimulation are cervical tonicity, positive Kernig’s sign (Kernig’s sign), and positive Brudzinski’s sign (Brudzinski’s sign). Meningeal stimulation signs are brain hemorrhage, brain infarction, brain inflammation causing brain tissue edema irritation of the meninges or meningeal disease, resulting in increased central nervous system excitability, increased neck tone, muscle spasm after stimulation, and joint stiffness. Several fixed examination criteria have been determined clinically for accurate diagnosis, as follows: 1. Cervical ankylosis, the patient lies flat, and when passively raising the head, the neck is stiff and hypertonic and cannot be flexed forward. 2. Kernig’s sign, supine position, bilateral lower limbs are straight, one lower limb is resisted by passive lifting, and lower limb muscle spasm is positive. 3. Bruch’s sign, the patient goes to supine position, and when passively raising the head, bilateral hip and The knee joint will actively flex as positive.