Thirteen patients with infratemporal fossa malignancies treated in the Sichuan Cancer Hospital from 1988 to 1993 are reported. All cases were treated surgically with combined therapy. The survival rate of the patients with survival period beyond 2 years was 53.8%. The survival was associated with the extent of dissection (P<0.01). The operation value, surgical approaches, resection range, stylohamular line and repair are analyzed and discussed. A new surgical approach, a modified stylohamular line and a new surgical concept for resection of the infratemporal fossa malignancies - bony boundary of surgery are introduced in detail.