Plaster for treating constipation

The invention relates to a plaster for treating constipation, which comprises the following raw materials in parts by weight: 6 parts of dandelion, 5-8 parts of Chinese date, 6-9 parts of pepper and 4-7 parts of herba epimedii. The plaster has the benefits that the plaster is convenient to use; the constipation can be treated by only pasting the plaster on a navel; simulation of medicine on a stomach of a patient, and toxic and side effects of the medicine on a liver are avoided; a normal dietary habit of the patient cannot be influenced; the medicine is not damaged by digestive juice, and effect reduction due to a first pass effect of the liver can also be avoided, so that effective components in the plaster can be absorbed by the patient more quickly and better, and exert the effect more quickly and better; and a treatment effect on the constipation is more ideal.