In recent years, the number of patients with fractures to the hospital gradually increased. Fracture has become a common disease in daily life, and fracture fixation methods have plaster treatment or surgery into the bone screw or steel plate. Clinicians use plaster treatment will lead to poor blood circulation or pain, if the plaster is too tight, and if too loose, the plaster can't be fixed. This study explored the effects of plaster on the fake to simulate the real arm. Applying the strip resistive film pressure sensor and temperature and humidity sensor try to detect plaster on the fake arm pressure and temperature and humidity. Design GUI to help clinical interns practicing plaster with fake arm, showing the various parts of the pressure and temperature and humidity. To avoid stress caused by compression or overheating leads to the complications.