The invention discloses a method for preparing a medicine capsule for clearing away the heat and loosing the bowels and dispelling the rheumatism to relieve pain. The method comprises the following steps of: (1), an extraction process: 1, preparing materials and weighing, 2, extracting volatile oil, 3, preparing clear paste by taking cape jasmine fruits, licorice roots and chastetree fruits (fried), 4, percolating and 5, mixing; (2) a powder making process: 1, preparing the materials and weighing, 2, sterilizing, 3, drying and 4, pulverizing; and (3), a preparation process: 1, preparing the materials and weighing, 2, pelleting, 3, finishing granules, 4, totally blending, 5, filling and 6, polishing. When crude medicinal materials are extracted, the weight ratio of coptis chinensis to fructus forsythia to mint to inula flower to baical skullcap roots to schizonepeta to cape jasmine fruits to divaricate saposhnikovia roots to golden cypress to chrysanthemum to fructus viticis (fried) to licorice roots to szechuan lovage rhizome to rheum officinale to gypsum to platycodon grandiflorum to angelica root to dextrin to magnesium stearate is 5:40:20:10:40:40:40:20:20:80:40:20:20:160:20:40:40:30:2.8. The method has the advantage that the medicine capsule with good quality is produced.