目的　探讨魔芋对肿瘤的抑制作用及对免疫功能的影响。方法　分别将魔芋精粉(RKM) ,魔芋灰粉、新鲜魔芋茎块煎剂 ,环磷酰胺、生理盐水对艾氏腹水瘤 (EAC)小鼠灌胃给药。结果　各实验组与盐水对照组相比有明显的抑瘤作用 ,能延长小鼠的生存时间 ,同时对动物白细胞无影响 ,并能增加淋巴细胞转化率。结论　魔芋可能是通过增强机体免疫功能来抑制移植性肿瘤的生长 ,起到抗肿瘤作用 Objective To investigate the inhibitory effect of konjac on tumor and its effect on immune function. Methods Erigeron ascites tumor (EAC) mice were orally administered with konjac flour (RKM), konjac ash powder, fresh konjac stem decoction, cyclophosphamide, and saline. Results Compared with the saline control group, each experimental group had a significant anti-tumor effect, which could prolong the survival time of the mice. At the same time, it had no effect on the white blood cells of the animals and increased the lymphocyte transformation rate. Conclusion Konjac may inhibit the growth of transplanted tumors by enhancing immune function and play an anti-tumor effect.