The invention discloses a pull-type cyperus esculentus harvester which comprises a harvesting mechanism, a conveying mechanism, a screening mechanism and a collection mechanism on a body, wherein a gearbox on the body respectively drives the conveying mechanism and the screening mechanism by virtue of a transmission mechanism; the harvesting mechanism is composed of a scarifier, a soil digging machine and a recovery plate arranged below the front part of the body; the conveying mechanism is composed of a conveying chain plate and a chain wheel matched with the conveying chain plate; the screening mechanism is a double-layer vibrating screen; the collection mechanism is composed of a bean storage box, a double-layer collection box and an elevator; the bean storage box is arranged in the middle of the body; and the upper layer of the double-layer collection box is an impurity box, and the lower layer of the double-layer collection box is a transfer box. According to the harvester disclosed by the invention, cyperus esculentus and soil mixtures are dug out by the soil digging machine to be conveyed to the screening mechanism by the conveying mechanism so as to screen the impurities and cyperus esculentus, the impurities and cyperus esculentus respectively drop into the impurity box and the transfer box, and the cyperus esculentus in the transfer box are conveyed into the bean storage box by the elevator/ The whole mechanism is compact, clear in power transfer, less in residue and excellent in separation effect, and the problem that the cyperus esculentus is easy to plant and difficult to harvest is solved.