The invention discloses a melon and fruit slicing device. The melon and fruit slicing device comprises a rack, a panel is arranged at the upper end of the rack, a slicing seat is arranged on the panel, a transverse channel is arranged in the slicing seat, a feeding hopper is arranged at the position, located at the left upper end of the transverse channel, at the top of the slicing seat, a material pushing mechanism is arranged on the left side of the transverse channel, a cover plate is arranged on the right side of the transverse channel, a material falling hole is formed in the position, located on the side close to the cover plate, at the bottom of the transverse channel, a material storage box is arranged under the material falling hole, and a cutter assembly for slicing melons and fruits through downward pressing is arranged in the transverse channel in a matched manner. According to the melon and fruit slicing device, melons and fruits are conveyed to the position under a slicing assembly through the material pushing mechanism, the slicing assembly achieves downwards pressing to quickly slice the melons and fruits, the cut effect is uniform in thickness, the phenomenon of uneven thickness cannot happen, meanwhile, production has the characteristics of continuity, high efficiency and the like, and the requirement for large-scale production is met.