The invention discloses a device for drawing tensile specimen punctuations. The device consists of a storage tank (1) with a higher horizontal position, a motor device (2), a plurality of operation rods (3) with pointers and a base (4) with a scale ruler, wherein the storage tank (1) is used for holding a colorant; the motor device (2) can rotate or vertically move; the operation rods (3) can move and be used for drawing markers; the operation rods (3) can be adjusted according to the specimen shape. The device is suitable for drawing the tensile specimen punctuations with various materials and various shapes and sizes, no damage is caused by the drawn tensile specimen punctuations to specimen surfaces, scales are clear, and the plastic test of the tensile specimens is facilitated.