Muscle strength tests are performed in tui na to check muscle tone and muscle strength. Muscle tone refers to the degree of tension maintained in the muscle at rest. During the examination, the patient is asked to relax the examined area, and the doctor gently squeezes the examined muscle with his hand to experience its hardness. When the muscle tone is reduced, the muscle is flaccid; when the muscle tone is increased, the muscle is tense. Muscle strength refers to the force of muscle contraction and is clinically classified into the following six levels. Grade 0: No muscle contraction Grade 1: Muscle has weak contraction, but no ability to move the joint. Grade 2: Muscle contraction can drive the joint to move horizontally, but cannot resist the earth’s attraction when it does. Grade 3: Can move the joint against the earth’s gravitational force, but cannot resist the resistance. Grade 4: Can resist resistance of some intensity. Grade 5: can resist resistance of greater intensity to move the limb. The strength of the muscles is generally judged by asking the patient to make resistance movements, such as checking the strength of the biceps muscle, the patient takes a sitting position, the doctor is located in front of him, holds the patient’s wrist joint with one hand, asks the patient to make elbow flexion movement, the doctor applies the resistance force, and observes the strength of the biceps muscle.