The invention relates to a test car, belongs to the field of electrical equipment and instruments, and aims to solve the problems of low test efficiency and inaccuracy of test data in maintenance of electric equipment of a traditional substation. According to the technical scheme for solving the problems, a multifunctional folding type test car comprises a car body; a moving device is arranged at the bottom end of the car body; the car body comprises a back plate, a left vertical plate, a right vertical plate, a first transverse plate, a second transverse plate and a third transverse plate; support frames are respectively arranged on the left vertical plate and the right vertical plate; a connecting piece is arranged on the back plate; insulation protective covers are respectively arranged on the back plate, the first transverse plate, the second transverse plate and the third transverse plate; and a grounding terminal is arranged on the left vertical plate or the right vertical plate. The multifunctional folding type test car has the following advantages: the structures of the first transverse plate, the second transverse plate and the third transverse plate are arranged on the back plate, so that test equipment can be synchronously stored, the equipment carrying capacity is enhanced, the test equipment bearing capacity in a test area is improved, the test equipment can be operated and used in the car (without being carried out from the car), labors are reduced, and the test efficiency is improved.