The invention relates to a one-arm telpher at the top of an agitator bath, which serves as a conveying device for an iron ore concentrate pulp agitator bath. The one-arm telpher at the top of the agitator bath is realized by arranging a movable cargo boom at the top platform of the agitator bath and utilizing a winding engine to serve as a hoisting traction. The one-arm telpher at the top of the agitator bath thoroughly solves the problem of transporting materials (such as spare parts and maintenance tools) from the bottom of the agitator bath to the top of the agitator bath.