The invention discloses a medicament for treating scald without scar left and the preparation method of the medicament. The medicament is prepared from the following medicinal raw materials in parts by weight: 1-5 parts of folium eucalypti, 1-2 parts of table salt, 1-10 parts of peanut oil, 1-5 parts of Pinellia ternate, 1-5 parts of euphorbia helioscopia, 1-2 parts of borneol, 1-5 parts of coptis chinensis, 1-5 parts of Scutellaria baicalensis, 1-5 parts of rheum officinale, 1-5 parts of inella doederleinii hieron, 1-5 parts of golden cypress, 1-10 parts of snake oil, 1-10 parts of ricinus communis oil, 1-5 parts of cortex meliae, 1-5 parts of adiantum, 1-5 parts of garcinia mangostana, 1-5 parts of cotton rose, 1-5 parts of semen cuscutae, 1-5 parts of sedum sarmentosum and 1-5 parts ofrosa microcarpa. After being applied to the scald wounds, the medicament for treating scald without scar left can stop pain immediately; moreover, the patient feels cool and very comfortable, and no pustule, blister, scar or itch is caused in the whole treatment course; and after a period of treatment, wounds are healed without hyperplastic scar left. Thus the medicament has remarkable treatment effect on scald without scar left and has a broad application prospect.