The invention relates to the technical field of cooking equipment, in particular to prefabricated vegetable raw material cooking equipment and cooking method. The equipment comprises a cooking cylinder, a heating disc fixedly arranged on the inner side of the bottom end of the cooking cylinder, an opening cover rotationally connected to the top end of the cooking cylinder through a hinge and an exhaust cap arranged on the inner side of the opening cover, andthe opening cover is provided with an internal rotating mechanism. According to the cooking device, stirring and overturning of cooking objects in the cooking cylinder can be achieved through the arranged internal rotating mechanism, the overturning method does not need to open the opening cover, operation steps are reduced, the possibility that workers are scalded is reduced, the practicability is good, during overturning, a rotating handle is inserted into the inner side of the right end of a rotating column, the rotating handle can drive the rotating column to rotate, the rotating column can drive a gear to rotate, the gear can drive the rotating disc to rotate through a gear ring, the rotating disc rotates to drive stirring telescopic rods on the two sides of the bottom end to rotate, and the cooking objects in the cooking cylinder are driven to turn over through rotation of the stirring telescopic rods.