The invention provides a camshaft cover machining device, and relates to the technical field of intelligent machining. The camshaft cover machining device comprises a workbench device, a positioning device, a power device and a discharging device; the workbench device comprises a rotary workbench and fixing tool assemblies, wherein the fixing tool assemblies are arranged at the top of the rotary workbench, the rotary workbench is provided with positioning grooves, and the fixing tool assemblies comprise fixing heads which are coupled with machining parts; the positioning device comprises positioning pins and a positioning air cylinder, wherein the positioning air cylinder drives the positioning pins to be embedded with the positioning grooves; the power device comprises a driving motor fordriving the rotary workbench to operate periodically; and the discharging device comprises a material receiving assembly, a discharging air cylinder and a clamping head connected with the dischargingair cylinder, and the material receiving assembly and the clamping head are oppositely arranged in the radial direction of the rotary workbench. The camshaft cover machining device has the beneficialeffects of being simple and compact in structure, efficient, low in energy consumption and capable of reducing operation cost of enterprises.