The invention is to appropriately change the doctor's hourly wage in the screen sharing system through which a doctor provides remote medical care to a patient by sharing a screen with the patient. The screen sharing system for remote medical care, includes a patient terminal 100 and a doctor terminal 200, the patient terminal 100 being connective with the doctor terminal 200 through a network, in which a doctor 600 provides remote medical care to a patient 500 while sharing the screen displaying the image of an affected area that is taken by the patient terminal 100 with the doctor terminal 200; a number-of-doctors detection module 321 that detects the number of doctors who can provide remote medical care; and a doctor's hourly-wage changing module 322 that changes the hourly wage of the doctor based on the detected number of the doctors.