Objective To investigate how to protect the parathyroid gland and complication prevention meas -ures better.Methods A total of 152 patients with thyroid surgery from January 2012 to January 2014 in our hospital were analyzed.Results 48 cases had symptoms of low PTH (31.56%), and 89 patients had the symptoms of low blood calcium(58.55%).There are 45 cases of asymptomatic hypocalcemia (29.61%).There was no permanent hypocalcemia.Conclusion In total excision of the thyroid gland , surgery doctors should carefully identify parathy -roid gland, enhance the technical levels of operation , protect the parathyroid gland artery and vein reflux , observe and deal with the complications in time , and do a good job in the prevention of complications .