Epiphyllum mostly adopts the concoction method of soaking in water of cholecalciferol, steaming through and drying in the sun, and the concocted products include salt epiphyllum, black smooth slice, white epiphyllum and so on. Salt epiphyllum: the collected epiphyllum is washed and immersed into the water solution of edible gall bladder overnight, then add salt, continue to soak, and take it out to dry in the sun every day, and gradually extend the drying time until a large number of crystallized salt particles (salt cream) appear on the surface of the epiphyllum, until the hardening of the body texture. Black Shun piece: the collected epiphyllum according to the size were washed, immersed in the water solution of edible gall bladder for a few days, together with the immersion solution boiled to the heart, fish out, water bleaching, longitudinally cut into a thickness of about 0.5cm of the slice, and then bleach with water, with the coloring solution so that the epiphyllum dyed into a strong tea color, take out, steam until the emergence of the oil surface, luster, baked to half-dry, and then sun-drying or continue drying. White slices of epiphyllum: choose the uniform size of the epiphyllum, wash, immersed in water solution of edible gall bladder for a few days, together with the immersion solution boiled to the heart, fished out, peeled off the outer skin, longitudinally sliced into pieces of thickness of about 0.3cm, bleached with water, removed, steamed and dried in the sun. Epiphyllum need to be concocted before application, the use of drugs need to be carried out under the guidance of traditional Chinese medicine practitioners to identify the evidence, do not take raw epiphyllum.