The invention discloses a steel bar cutting machine with dust removing and counting functions. The steel bar cutting machine comprises a base, a supporting arm is arranged on the base, a movable arm is connected to the supporting arm, the right side of the movable arm is provided with a machine cover, a first motor is arranged in the machine cover, the first motor is connected with a grinding wheel, a handle is connected to the outer portion of the machine cover, a counting device and a clamping device are arranged on the base, the counting device comprises a shell, a counter is arranged in the shell, the counter is connected with a counter trigger button, a contact is arranged above the counter trigger button, a first spring is arranged on the outer side of the contact and the counter trigger button, and the base is further connected with a dust removal device. According to the steel bar cutting machine with the dust removing and counting functions, counting can be carried out after the steel bar is cut, the cost is low, and the counting is accurate; and the steel bar can also be clamped, the safety is relatively high, and the dust removing function is achieved, so that the pollution to the environment and the harm to the human body are reduced.