For the purpose of developing Korean Herbalogy with the plants of Lauraceaewhich grow wild and is planted in Korea, the these and writings on herbalogy, from literature of successive generations, have been thoroughly investigated and the results obtained as follows: 1. There were totaled to 8 genera and 20 in Korea and among them medicinal plants are 5 genera, 10species, some 50% in total, but the number of species may be added because of the similiar plants. 2. According to sum of 20 species in Lauraceae family, they were classified into Lindera genera 7, Cinnamomum genera 3. Thus it was noticed that Lindera genera was the main kind in total. 3. According to the oriental names which can be used for medical purpose, the medicinal plants belonging to the Lauraceae family were classified as Radix 3, Foilum 4, Fructus 4, Cortex 5. So Cortex is 50% of all and it is the most applied in the clinical treatments. 4. According to nature and flavour of medicinal plants, they were classified into warmth 15; pungent taste 18 thus it was noticed that warmth and pungent taste is the main in nature and flavour of medicinal plants 5. According to meridian tropism of herbs they were classified into liver meridian 6, stomach meridian 6, spleen meridian 5 thus it was noticed that liver meridian and stomach meridian is the main kind 6. According to the Properties and Principal curative action, they were classified into drugs for expelling wind 10, drugs for relieving pain 11. Thus it was noticed that drugs for relieving pain was the main kind 7. It was researched that toxic drugs include minor toxin were 2 kinds From this result, it was revealed that Cortex was the main kind in the plants for medical purpose of Lauraceae. And toxic plants was slightly poisonous that it will be used for clinical treatments more easily. It is considered that many experiments and clinical approaches must be continued to use Lauraceae plants widely.