Objective: To study the characteristics of superficial musculoaponeurotic system (SMAS) and provide anatomical basis for rhytidectomy of parotid region in the face. Methods: 10 sides adult antiseptic head samples (women were in the majority) were observed through gross anatomy; Histology slice in 2 sides of fresh head samples was also observed. Results:The $MAS was a distinct tissue layer, and the soft-tissue between SMAS and fascia parotidea masseterica was potential, but the facial nerves were located in the deep fascia parotidea masseterica. Conclusi...