The invention discloses a method for controlling the shape of a Q345E type steel plate. The method includes the following steps: a plate slab is directly rolled after tapping, wherein the finish rolling temperature of the steel plate is controlled to be in the range of 880-910 DEG C; the steel plate swings in the front of a finishing mill for 10-15 seconds after the steel plate is rolled; the steel plate is transmitted to a heat straightening machine after the steel plate reaches the finishing mill in air, and straightening is performed for many times, wherein the straightening temperature is 530-630 DEG C, and the straightening force is 800 KN-1200 KN. The method can be used for controlling the shape of the Q345E type steel plate with the thickness of 8 mm, and the problem of bad shape of the Q345E type steel plate can be effectively solved.