The utility model discloses a multifunctional painting tool car which comprises a frame body, wherein one side of the frame body is hinged with a support plate which can be horizontally unfolded and vertically folded; and a positioning structure which is used for fixing the support plate when the support rotates to a horizontal unfolding position is arranged between the support plate and the frame body. When required, the support plate is horizontally unfolded, the painting tools such as required pigments and the like are temporarily placed on the support plate, and when not required, the support plate is vertically folded, so that the space occupied by the tool car is saved and convenience is brought to the outdoor painting creation. The positioning structure is arranged between the frame body and the support plate, so that the support plate can be fixed by the positioning structure when being unfolded and positioned at the horizontal position so as to conveniently and temporarily place the painting tools. The painting tool car is simple in structure, convenient in use, small in floor area and suitable for the use of outdoor creation.