The invention discloses a bolt extruding machine. An extruding motor is arranged on an extruding machine base, a supporting pillar is arranged on the upper surface of the extruding machine base, and a horizontally-arranged extruding cavity is formed in the supporting pillar; an extruding bolt is embedded into the extruding cavity, linkage between the extruding bolt and the extruding motor is achieved, and a feeding bin is arranged above the extruding cavity; the feeding bin communicates with the extruding cavity, a first metal filter screen is arranged on the communicating position of the feeding bin and the extruding cavity, and a screen exchanger is arranged at the rear end of the extruding cavity, and an extruding machine head is arranged at the rear end of the screen exchanger; and a flow velocity sensor is arranged at the rear end of the extruding machine head, and stirring gears symmetrically arranged in an up-down mode are arranged in the extruding machine head. According to the bolt extruding machine, the quality of an extruded product can be improved, and blocking of the extruding cavity of the bolt extruding machine can further be avoided; a temperature sensor and the flow velocity sensor are arranged, so that the operating state of the bolt extruding machine is monitored in real time; and the structure is simple, the bolt extruding machine is easy to achieve and has good application prospects.