Brain injury patients can try the following methods of functional rehabilitation exercises: 1, hold the squatting method: single or two hands forward to hold the fixed object, the body upright, feet apart, and shoulder width, slowly squatting and then stand up, repeatedly for 3 to 5 minutes. 2, the affected limb swing method: single or two-handed forward or lateral extension to hold the fixed object, single foot weighted and standing, the affected limb forward flexion, backward extension, inward and outward swing 3 ~ 5 minutes. 3.Inside and outside rotation method: stand with hands on the fixation, single foot slightly forward, foot following the ground, for internal and external rotation for 3~5 minutes. 4.Hip flexion method: the patient is sitting on the edge of the bed or chair, both lower limbs are naturally separated, and the patient repeatedly makes hip flexion and knee flexion movements for 3~5 minutes. 5.Open law: the patient is sitting on a chair or stool, the hip, knee and ankle joints are each at an angle of 90°, the feet are separated, and the axis is between the feet, doing double knee abduction and inward movement for 3~5 minutes. 6, pedal air flexion and extension method: patient supine, hands on the side of the body, both lower limbs alternately flex the hip and knee, so that the lower leg hanging in the air, like pedaling a bicycle for 5 to 10 minutes, to flex the hip joint is the main, the amplitude, the number of times gradually increased. 7, affected limb swing method: take the supine position, both lower limbs straight, hands on the side of the body, the affected limb straight leg raised to a certain limit, for inward and outward 5 ~ 10 minutes. 8.Inside and outside rotation method: the patient takes the supine position, both lower limbs are straight, both feet are shoulder-width apart, both hands are placed on the side of the body, with the heel as the axis, both toes and lower limbs are rotated internally and externally for 5~10 minutes, with the side with severe functional limitation as the main focus. 9.Hip flexion and opening method: Patients lie on their back, flex the hip, flex the knee, step on the bed rail with both feet together, take the lower part of both feet as the axis, do the knee inward and outward activities for 5~10 minutes, mainly on the side with severe hip limitation, and gradually increase the amplitude and frequency. 10, prone open law: the patient takes the prone position, both knees are shoulder-width apart, lower limbs are straight, hands are placed above the chest, then bend the knees 90°, take the front of both knees as the axis, do the calf inward and outward activities for 5~10 minutes, mainly on the side with serious hip joint, the amplitude and number of times gradually increase.