The invention discloses a gear type flow delivery device used for an artificial hill. The gear type flow delivery device comprises a support. The support is provided with a vertical piston pump. The piston pump comprises a pump body, a piston and a piston rod. A pump cavity is formed in the pump body and is separated into an upper cavity and a lower cavity through the piston. The piston rod is in tight sliding fit with the pump body. The piston rod is fixedly connected with the support. The pump body is in sliding fit with the support. The upper end and the lower end of the pump body are each provided with a water inflow pipe with a one-way valve and a water outflow pipe with a one-way valve. A first rack distributed in the axis direction of the pump body is arranged on the outer side of the side wall of the pump body. A transverse supporting plate is arranged on the support and is in sliding connection with the support. The lower end of the supporting plate is fixedly connected with a second rack. A gear set is arranged between the first rack and the second rack. The lower end of the pump body is connected with a heavy block. The gear type flow delivery device has the beneficial effect that energy is saved in the delivery process of flow on the artificial hill.