The invention discloses a pull rod press machine with power arranged at the lower portion. A motor, a screw and a nut are combined as a power system and arranged under a work table. Force-amplifying mechanisms are arranged between an upper die assembly and the nut so that the upper mold assembly can output large output force, and forming and machining of work-pieces are convenient. Under the condition of needing certain tonnage of the press machine, the low-power motor can be adopted, so that the energy is saved and the cost is lowered. Meanwhile, due to the fact that the power system is arranged at the lower portion, the stress state of a base under the work table is improved, the base of the press machine can meet the strength and rigidity requirements more easily, shock absorption and noise reduction are facilitated, and the gravity center of the press machine descends, so that the dynamic property of the press machine is improved. Compared with a structure in the prior art, the structure size of the press machine is greatly reduced, the impact force is large, the work efficiency is high, the energy utilization rate is high, the work noise is low, and excellent combination property is achieved.