The invention provides a novel LED lamp machining device. The novel LED lamp machining device comprises a supporting bracket and machining devices, wherein the machining devices are correspondingly installed at the left and right sides of the supporting bracket; the two sides of the supporting bracket are correspondingly provided with sliding chambers; each machining device comprises a sliding frame and a steering frame, wherein each sliding frame is installed inside the corresponding sliding chamber in a smooth sliding manner; the steering frame is installed at the upper end of the corresponding sliding frame in a steerable manner through a steering shaft; the bottom of each sliding frame is provided with a smooth sliding part; each smooth sliding part comprises a pulley and a sliding rail; each sliding frame is also internally provided with a placing groove; the sidewall of each placing groove is fixedly equipped with a first motor; an axle rod of each first motor is fixedly equippedwith a toothed gear; the outer side of each steering frame is fixedly equipped with a toothed bar which is matched and connected with the corresponding toothed gear; each steering frame is provided with a sliding chute of which the opening is toward an LED lamp tube; each sliding chute is internally smoothly equipped with a regulating and control arm rod extending toward the LED lamp tube; each regulating and control arm is internally provided with a screw hole of which the notch is far away from the LED lamp tube; each screw hole is internally matched and connected with a first screw rod; and each first screw rod is connected with a second motor which is fixedly installed in the corresponding steering frame.