The invention discloses a fruit slitting device which is composed of an annular knife body, two or more combined knife bodies and a knife body support. The annular knife body is arranged in an inner round hole of the knife body support and is concentric with the inner round hole. Each combined knife body is composed of two segments of linear blades and one segment of arc blade, wherein the arc blade is arranged between the two segments of linear blades; the arc blades on the combined knife bodies are arcs concentric with the annular knife body and are fixedly connected to the annular knife body. The other ends of the linear blades on the combined knife bodies are fixedly arranged in the inner round hole of the knife body support and are evenly distributed and arranged. Preferably, the four combined knife bodies are arranged; and the knife body support is in the shape of an apple and is provided with an apple stalk handle. The fruit slitting device is simple in structure, good in stability, good in buffering splitting force effect, long in service life, attractive in shape, good in slitting guidance quality and good in practical effect.