The lateral bending of T beam increases the deflection of gravity center,which not only leads to the difficulty of the beam’storage,but also brings a series of problems for the lifting of the beam.Meanwhile,the lateral bending also affects the progress of bridge construction.If the bending is too large,it will cause adverse force to the beam,which is easy to lead to a serious accident.This paper analyzes the lateral bending of precast post-tensioned T beam,proposes corresponding control measures to guide the construction and control effectively the construction quality,hoping to serve as reference for persons of the same occupation.