The invention relates to an unmanned mobile phone assembly operation method. The method includes the following five steps of system state selection, mode selection, assembly operation, finished product detection and operation statistics. When production is conducted according to the operation method, assembly accuracy and stability can be conveniently controlled, the method can be conveniently dissolved to be achieved through different automated operation devices, the assembly efficiency can be greatly improved, the requirements of existing plant flow production lines for automated production are met, and the method is achieved according to actual situations. According to different products, different systems are set. Through the combination of manual tests and assembly device correction, different products are produced, and problems in actual production are solved.