The invention discloses a metal plate cutting machine used for engineering construction. The metal plate cutting machine comprises a base platform, a column body fixed on the rear side surface of the base platform and a cutting device arranged on the front side of the column body, wherein a cutting cavity is formed in the front side surface of the cutting device; a first motor is fixedly arranged in the inner top surface of the cutting cavity; an upper cutting head is connected to the bottom of the first motor in a matched manner; a lower cutting head is arranged on the inner bottom surface of the cutting cavity and at the position opposite to the upper cutting head; an alternate cavity is formed in the cutting device and at the position above the first motor; a first transfer cavity is formed in the cutting device and at the position below the upper cutting head; a second transfer cavity arranged in a manner of extending in the up-down direction is formed in the cutting device and at the position in rear of the cutting cavity; a guide connection groove is formed in the front end of the alternate cavity; a first screw rod arranged in a manner of extending in the up-down direction is arranged in the guide connection groove; and an inner clamping pipe, of which the bottom end is in rotating connection with the top end of the first motor in a matched manner, is arranged on the inner bottom surface of the alternate cavity. According to the metal plate cutting machine used for engineering construction, the structure is simple, double-side cutting is realized, the cutting difficulty level is lowered, the cutting precision is improved, both time and labor are saved, and the rejection rate is reduced.