The invention provides a mobile mesona chinensis harvester, which comprises a carrier, a leaf collecting box, a water tank, a transmission device and a harvesting device, wherein the leaf collecting box and the water tank are mounted on the carrier; the harvesting device is beneficial to pulling out mesona chinensis; and the transmission device is detachably mounted on the carrier through a mounting frame. The transmission device is detachably mounted on the carrier through the mounting frame, and can be connected by bolts in a detachable manner; through two rows of rubber extrusion conveyor belts arranged at close distance, the mesona chinensis enters between the two rows of rubber extrusion conveyor belts arranged at close distance and is elastically extruded by the rubber extrusion conveyor belts, so that the mesona chinensis can be easily pulled out from wet land; the mesona chinensis conveying mode of the rubber extrusion conveyor belts is suitable for the height of the grass andthe planting environment; and in addition, the surfaces of roller shafts are covered with rubber elastic layers, so that the elasticity of the materials can be fully utilized, and the mesona chinensiscan be fully extruded and harvested for transportation.