The invention relates to a terbinafine hydrochloride cream and a preparation process thereof. The terbinafine hydrochloride cream is an external O/W-type cream uniformly distributed in a substrate. The cream is characterized in that with the preservative adopted in the prescription, increasing speed of related substance in the preparation provided by the invention can be reduced, storage life of the product is prolonged, and terbinafine hydrochloride is more stable in the cream. The preparation process comprises the steps of water phase and oil phase preparing, water phase and oil phase emulsifying, emulsification time controlling, filling, end-sealing, packaging, and the like.