There will be grease or oil droplets on the surface of stool when defecation occurs, the frequency of stool becomes more frequent, and grease appears in the stool, it can be judged that the symptom of intestinal obstruction has improved, but it needs to carry out the relevant examination under the guidance of the doctor to make clear whether the intestinal obstruction is reopened or not. Patients with intestinal obstruction can’t eat or drink during conservative treatment, drinking paraffin oil can improve the recovery of gastrointestinal function, lubricate the intestinal tract, and facilitate the descent of the obstruction, and it can also play the role of marking and verification, if paraffin oil is discharged smoothly, it suggests that the situation of intestinal obstruction has improved, which is conducive to clinical diagnosis. Whether or not the patient with intestinal obstruction is recanalized can not rely on the shape of the stool, the number of times and whether or not it contains oil to make a single judgment, it should be under the guidance of the doctor, the relevant imaging examination, to clarify whether or not it is recanalized, to prevent accidents.