The invention relates to the field of smokeless tobaccos, and particularly relates to a mouth-holding type smokeless tobacco product and a preparing method thereof. The mouth-holding type smokeless tobacco product comprises, by weight, 5-25 parts of a tobacco material, 0.2-8 parts of a traditional Chinese medicine agent, 0.1-2 parts of a saline taste agent, 0-6 parts of a sweetening agent, 0.1-2.5 parts of a pH conditioning agent, 0.1-6 parts of a flavouring agent, 0.2-2.5 parts of a humectant, 0-1.2 parts of an antioxidant, 0.001-0.5 part of a corrosion remover, 0-4 parts of a polybutene and 5-25 parts of water. By means of the mouth-holding type smokeless tobacco product, sun-cured tobaccos produced in Guizhou serve as main tobacco raw materials, nicotine reducing and aroma enhancement are carried out on the tobaccos, and the traditional Chinese medicine agent is added, so that oral cavity and throat excitements caused by contents such as the nicotine are reduced, and the taste quality and the fragrance style are improved. In addition, the traditional Chinese medicine agent further has a certain antibacterial property, and the using safety performance of the product is improved.