In this dissertation, I will focus on the channel entry, the effect, and the treatment throughout books of oriental medicine from ancient to modern in order to classify the medicines of the liver as main or supplementary organ. The results are as follows: 1. The kinds of the medicines of working of the liver(本臟) were 29, which were Amydae carapax(鱉甲), Chrysanthemi Flos(菊花), Cassiae Torae Semen(草決明), Plantaginis Semen(車前子), Scirpi Seu Sparganii(三稜), Ulmi Pasta Semen(蕪荑), Cinnamomi Cortex(肉桂), Fraxini Cortex(秦皮), Chaenomelis Fructus(木果), Corii Asini Colla(阿膠), Chuanxiong Rhizoma(川芎), Adenophorae Radix(沙蔘), Coicis Semen(薏苡仁), Acanthopanacis Cortex(五加皮), Zizyphi Spinosae Semen(酸棗仁), Picrorrhizae Rhizoma(胡黃連), Gentianae Radix(草龍膽), Citri Reticulatae Virdie Pericarpium(靑皮), Paeoniae Alba Radix(白芍藥), Paeoniae Rubra Radix(赤芍藥), Bupleuri Radix(柴胡), Peucedani Radix(前胡), Naturalis Indigo(靑黛), Citrus unshiu(橘葉), Rhinocerotis Cornu(犀角), Aucklandiae Radix(木香), Polygonati Odorati Rhizoma, Farfarae Flos(款冬花), Evodiae Fructus(吳茱萸), Citri Reticulatae Pericarpium(陳皮) . 2. The kinds of the medicines of working of other viscera(他臟) were 7, which were Astragaliadix(黃耆), Ginseng Radix(人蔘), pinelliae Rhizoma(半夏), Myristicae Semen, Euryales Semen, Arecae Semen, Piperis Longi Fructus. 3. Medicines, effected on the heart functioned through any other viscera are as follows: Arecae Semen works to treat Spleen Gi Entering the Liver(脾氣入肝), Piperis Longi Fructus, pinelliae Rhizoma(半夏), Euryales Semen and Myristicae Semen operate to treat Spleen Cold Entering the Liver(脾冷入肝), Astragali Radix(黃耆) and Ginseng Radix(人蔘) work to treat Spleen Vacuity Entering the Liver(脾虛入肝). In the study of concerning the medicines effected on the liver, It is considered that it dedicated to development of the medicines related to the disease of the liver and making efficient use of the medicines.