Automobile body manufacturing method, automobile body structure and automobile

The invention discloses an automobile body manufacturing method, an automobile body structure and an automobile, and the automobile body manufacturing method comprises the steps that an aluminum ingot with the temperature being the temperature required by extrusion is subjected to round extrusion machining to form a tubular profile with a fracture; the cylindrical profile is flattened from the fracture to form a flattened piece; and the flattening piece is subjected to bending machining. The invention aims to reduce the production and manufacturing cost of the existing aluminum vehicle body. 本发明公开一种车身制造方法、车身结构以及汽车，其中，所述车身制造方法的步骤包括：将温度为挤压所需温度的铝锭通过圆挤压加工形成带有断口的筒状型材；将所述筒状型材自所述断口处展平，以形成展平件；将所述展平件进行弯折加工。本发明旨在降低现有铝制车身生产制造成本。