The invention discloses a frame of a vehicle. The frame comprises a frame structure and a roof structure, wherein front air inlets, a cockpit and rear air outlets of the frame structure are communicated; the left part of a middle cover plate of the roof structure is provided with a left vertical sheet; the right part of the middle cover plate is provided with a right vertical sheet; a left cover plate is laminated on the left vertical sheet to form fit; a right cover plate is laminated on the right vertical sheet to form fit. Air of an external space enters from the front air inlets, blows to a driver and a passenger from the front face, and then is discharged from the rear air outlets, so all bodies of the driver and the passenger can be blown by the air to feel cooler and more comfortable. Joints among the left, right and middle cover plates of the roof structure are positioned in splicing faces in two vertical directions, so rainwater does not directly fall on the joints among the left, right and middle cover plates when falling from top to bottom and can be prevented from entering the cockpit from the joints among the left, right and middle cover plates to avoid causing any inconvenience to the driver.