"Knee Care" provides relevant information on asthma treatment, control and care, including "video", "diary", "game" and "medical care answers and questions". In addition, the program will issue knee care reminders based on the Exercise records of the patient/patient's family members. The patient/patient's family members will perform relevant treatments according to the reminder notification and stored in the program's exercise log, so that the doctor can clearly know the patient's knee care .