The invention relates to an assembling system comprising a clamping unit (1), a feeding unit (2), an execution unit (3), an assembling tool unit (4) and a supporting piece (5). The clamping unit (1),the feeding unit (2) and the execution unit (3) are located on the upper side of the supporting piece (5), and the execution unit (3) is located on the lower side of the supporting piece (5). Motion control and operation parameter setting can be conducted on the units through a control unit, automatic control of the assembling system is achieved, the manpower is saved, and the product assembling efficiency is improved; and different product assembling processes can further be set through the control unit, and thus the assembly requirements of the assembling system for different products are further met.