The invention discloses a bath packet for improving sleep and treating skin diseases, and a preparation method of the bath packet. The bath packet is prepared from the following raw materials in partsby weight: 8-15 parts of radix angelicae, 8-15 parts of holy basil, 8-15 parts of elecampane, 8-15 parts of cacumen biotae, 6-12 parts of belonging delay deliver, and 4-10 parts of angelica sinensis.The bath packet has the beneficial effects that traditional Chinese medicine can be placed in a bathtub, a stifling container or a lavipeditum barrel for bathing, local blood circulation can be improved in the process of bathing, stifling or lavipeditum, cold is dispelled, metabolism is promoted, sleep is improved, the traditional Chinese medicine components inside are adsorbed, and the effect oftreating the skin diseases can be achieved. According to the bath packet for improving sleep and treating the skin diseases, the composition of the medicine components is reasonable, the dosage is less, environmental protection is achieved, operation is easy, the curative effect is remarkable, and the side effect is less.