The invention relates to equipment for automatically assembly a joint orifice in a manual pump, belonging to the field of mechanical manufacturing. The equipment comprises a main frame, an automatic feeding mechanism, a screwing mechanism and a manual pump fixing mechanism, wherein the automatic feeding mechanism, the screwing mechanism and the manual pump fixing mechanism are respectively arranged on the main frame. Due to the adoption of an automatic feeding mode, the feeding mechanism designed independently is used for carrying out cyclic feeding. The joint orifice is mounted by adopting a mode of comparing torque detection and a standard, so that the mounting precision is ensured. The equipment disclosed by the invention has the advantages of simple structure, novel concept, convenience in use and reliability and stability in assembly process. Automatic assembly of the joint orifice in the manual pump is realized, and the assembly process is reliable and stable. The equipment can be directly applied to an automatic assembly production line, and therefore the labor cost is reduced.