The invention writing machine for a hand-writing font blackboard. The writing machine comprises an X-axis stepping motor, a Y-axis guide rail, an X-axis guide rail, a Y-axis stepping motor, a pen rack, an idler gear seat and two mounting pads, wherein the two mounting pads are respectively arranged at two ends of the top of the blackboard; the X-axis guide rail is arranged above the mounting pads;the Y-axis guide rail is arranged on one side, close to the writing surface of the blackboard, of the X-axis guide rail; a sliding seat is fixed on the Y-axis guide rail; and the pen rack is slidablyarranged on the Y-axis guide rail below the Y-axis stepping motor. According to the writing machine, the X-axis stepping motor, the Y-axis guide rail, the X-axis guide rail, the Y-axis stepping motor, the pen rack, the idler gear seat and the mounting pads are arranged, automatic writing can be achieved effectively by using chalk, a traditional manual writing is replaced, the writing time in a class is saved, and the writing work of teachers is reduced; and the chalk can be effectively driven to be automatically lifted to compensate for the consumption of the chalk automatically, the writingis improved to be more close to standard fonts, character errors are reduced, the machine is convenient for the classroom teaching of teachers, and the teaching quality is improved.