The utility model discloses a multifunctional asphalt mixture cutting machine which comprises supporting legs, a base is supported at the upper ends of the supporting legs, a control box used for inputting operation parameters is arranged on the base, an operation table and a lifting shaft are arranged on the control box, and the lifting shaft is embedded in the operation table. A mechanical support is arranged on the table top of the operation table, a mechanical arm which is perpendicular to the mechanical support and can rotate is arranged on the mechanical support, and a gripper for installing a saw blade is arranged on the mechanical arm. A first baffle, a second baffle and a third baffle are further arranged on the operation table, the orthographic projection of the first baffle is perpendicular to the orthographic projection of the saw blade on the operation table, the second baffle and the third baffle are symmetrical about the orthographic projection, and the positions and angles of the three baffles are adjustable. The bituminous mixture cutting machine can achieve integration of longitudinal cutting and radial cutting of the test piece, and the machining precision of thetest piece is improved.