Recovery time for quadriceps exercises for hemiplegia varies from weeks, months or even years, depending on the severity of the patient’s condition, the duration of the rehabilitation intervention, and whether or not the patient adheres to the rehabilitation exercises. Hemiplegia generally refers to body movement or sensory impairment caused by cerebral infarction or cerebral hemorrhage. If the patient’s lesion is small, the treatment is timely and appropriate, and the patient actively adheres to rehabilitation exercises, the recovery of quadriceps function is generally faster. If the patient has a large lesion, severe neurological damage, does not take appropriate treatment in time, has serious accompanying symptoms such as cognitive impairment, and does not actively participate in rehabilitation exercises, the recovery time of quadriceps function may be longer, and in some severe cases, it may not be possible to recover completely, but only part of the quadriceps function can be recovered. It is recommended to seek medical treatment in time after hemiplegia, and carry out standardized treatment and exercise under the guidance of physicians and therapists, so as to avoid delaying the best recovery time.