The utility model discloses a watermelon harvester, including frame (6), be equipped with the seed extractor on frame (6) at least and construct (7), its characterized in that: the discharge gate that constructs (7) at the seed extractor is equipped with melon skin recovery mechanism, the melon skin is retrieved the mechanism and is contained: connect melon skin groove (12) and conveying mechanism (11), connect melon skin groove (12) to establish the discharge gate that constructs (7) at the seed extractor, the one end of conveying mechanism (11) is established to in connecing melon skin groove (12) to articulated with frame (6), the other end is the free end. Compared with the prior art, the utility model has the characteristics of simple structure is reasonable, and operation, convenient to use can solve rationally that get behind the seed melon skin department and the melon skin pollutes ground environment problem etc.