The invention discloses a folk prescription for treating hypertension. Each dose of the folk prescription for treating the hypertension is prepared from the following medicinal materials in parts by mass: 20-25g of minuartia, 20-30g of oenanthe stolonifera, 5-10g of folium ginkgo bilobae, 5-10g of cedarwood bark and seeds and 10-15g of tender cedarwood shoots. A processing method of the folk prescription for treating the hypertension comprises the following steps: firstly, juicing oenanthe stolonifera, then adding 1L drinking water, adding cedarwood bark and seeds and tender cedarwood shoots, heating until boiling, then boiling with warm fire for 10 minutes, adding minuartia and oenanthe stolonifera, boiling with warm fire for 15 minutes, filtering, and orally taking decoction; secondly, boiling the original medicinal materials with warm fire for 20 minutes, filtering, and orally taking decoction; thirdly, boiling with warm fire for 30 minutes, filtering, and orally taking decoction. The folk prescription for treating the hypertension has a good curative effect on general hypertension, one treatment course lasts three days, the curative ratio of one treatment course is 81%, the hypertension can be cured in three treatment courses, and the effective rate is 87%. The folk prescription for treating the hypertension has a good effect on blood pressure control, does not cause recurrence and is easy to prepare and low in cost, so that the folk prescription for treating the hypertension is especially applicable to vast rural areas.