The invention discloses a flectional plate surface machining machine. The machine comprises a base, a rack fixedly arranged on the base, a cutting tool device used for machining a plate, a power device used for driving the cutting tool device to machine the plate, and a plate feeding conveying device used for conveying the plate to a machining position. The cutting tool device is fixedly connectedto the power device in a movable mode. The plate is arranged on the plate feeding conveying device in a movable mode. The cutting tool device, the power device and the plate feeding conveying deviceare all supported on the rack. According to the flectional plate surface machining machine, the structure combining the cutting tool device, the power device and the plate feeding conveying device isadopted, the surface of the flectional plate is machined, the machining work safety is improved, in addition, the machining machine is exquisite in overall design and compact in structure, the limitedplane and space positions are fully utilized, the convenience of mounting and dismounting of the machining machine, part replacing and maintenance and the machining work is improved, and the machining machine is suitable for application and popularization.