Objective To summarize experience in pectoralis major myocutaneous (PMMC) flap reconstruction for patients undergoing head and neck surgeries. Methods We conducted a retrospective study to analyse the clinical data of 20 patients who had PMMC flap reconstruction in a head and neck surgery from March 2011 to June 2016. All patients were male,with the average age of 54 years(ranging from 27 to 71 years). The PMMC flaps of all patients survived after the surgery. Only one patient developed pharyngocutaneous fistula ,and was recovered after treatment with incision dressing. Among follow?ups for 2 to 24 months,all patients got well recovered,the swallowing and communication functions normal communication and the appearance a satisfactory. good looking. Conclusion PMMC renders effective flathe flap reconstruction with broad clinical application value is an optimal choice for patients underwent head and neck surgery with muscle or skin defect,especially for those who had postoperative radiotherapy because of its rich blood supply and it has a lot of affluent tissues,fmore flexibility inle application and higher survival rate. So it is highly applicable,especially for grass?roots hospitals.