The invention provides a six-connecting-rod teaching device of a six-axis robot, and belongs to the technical field of robots. The problem that existing robot teaching operation is complex and long in consumed time is solved. The six-connecting-rod teaching device of the six-axis robot comprises a base, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod and six encoders, the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod, the fifth connecting rod and the sixth connecting rod are sequentially connected end to end, and the six encoders are arranged on the connecting portion of an executing end and the sixth connecting rod, the connecting portion of the sixth connecting rod and the fifth connecting rod, the connecting portion of the fifth connecting rod and the fourth connecting rod, the connecting portion of the fourth connecting rod and the third connecting rod, the connecting portion of the third connecting rod and the second connecting rod and the connecting portion of the second connecting rod and the first connecting rod respectively. The device can carry out teaching by being separated from the robot, more labor is saved in operation, and the device is more convenient to operate.