The invention provides a multifunctional cutting device for elevator door panels. The multifunctional cutting device comprises a conveying mechanism, a supporting mechanism and a cutting mechanism. A plurality of accommodating grooves are formed in a conveying surface of the conveying mechanism at intervals along a conveying direction of the conveying mechanism. The supporting mechanism comprises two side frames, a mounting frame and a mounting board; the two side frames are arranged vertically and symmetrically on two sides of the conveying mechanism; two ends of the mounting frame are respectively connected with the two side frames; a first support base and a second support base are oppositely arranged on one side close to the conveying mechanism; a first limit block is arranged at the bottom end of the first support base, and a second limit block is arranged at the bottom end of the second support base; two ends of the mounting board are respectively connected with the first support base and the second support base and the mounting board is capable of moving up and down along a vertical direction. The cutting mechanism comprises multiple cutting blades. The multifunctional cutting device for the elevator door panels can realize continuous machining and meet requirements of machining of elevator door panels in different sizes, and accordingly has wide application range.