The invention discloses a drug for treating ascaris intestinal obstruction. The drug is prepared from, by weight, 5-10 parts of costus roots, 5-10 parts of cortex magnoliae officinalis, 1-5 pars of immature bitter oranges, 3-6 pars of rhubarb, 3-6 parts of fructus mume, 1-5 parts of semen arecae, 5-10 parts of fructus quisqualis, 1-5 parts of natrii sulfas, 1-5 parts of ginger, 5-10 parts of herba artemisiae scopariae, 5-10 parts of senna leaves, 1-5 parts of pericarpium citri reticulatae, 3-6 parts of dandelions, 3-6 parts of China ixeris, 5-10 parts of angelica sinensis, 1-5 parts of radix achyranthis bidentatae, 1-5 parts of honeysuckle flowers, 5-10 parts of fructus forsythiae, 1-5 parts of radix bupleuri, 3-6 parts of cinnamon, 1-5 parts of inula flowers and 1-5 parts of prepared common monkshood daughter roots. According to the drug for treating the ascaris intestinal obstruction, the compatibility is conducted on all drugs according to differentiation, and the effects of dispersing cold, warming innards, stopping vomit, moistening dryness, lubricating the intestines, removing toxicity, relieving pain and the like are achieved.