The invention discloses salty and fragrant yoghurt sauce and a preparation method thereof. The yoghurt sauce is prepared from the following raw materials: salts, a protein supplement, compound stabilizers, a flavor regulator, a sweetening agent, 150-250U/ton of strains and raw milk. The compound stabilizers comprise acetylated distarch oxalate, gelatin, sodium caseinate and pectin. The salts comprise edible salt, an emulsifying salt and a mineral salt. The protein supplement is an animal protein or a vegetable protein. When the yoghurt sauce is prepared, the materials are mixed and homogenized, then pasteurization is carried out, then strains are inoculated and fermented, and finally filling and after-ripening are carried out. The salty and fragrant yoghourt sauce disclosed by the invention is prepared from the raw materials of the raw milk, the salts, the protein supplement, the compound stabilizers, the flavor regulator and the sweetening agent, is moderate in salty and fragrant taste, rich in fragrance and good in water binding capacity, can stably meet smearing requirements, and is deeply loved by consumers.