Traditional Chinese medicine preparation for treating skin diseases of pets and preparation method thereof

The invention discloses a preparation method of a traditional Chinese medicine preparation for treating skin diseases of pets, which comprises the following steps: crushing radix sophorae flavescentis into powder, putting the powder into an ethanol solution, treating the ethanol solution in ultrasonic equipment for 2-3 times, and filtering to obtain a radix sophorae flavescentis extracting solution; crushing cortex dictamni into powder, putting the powder into an ethanol solution, and filtering to obtain a cortex dictamni extracting solution; crushing rumex madaio makino into powder, putting the powder into a mixed solution of ethanol and propylene glycol, then putting the mixed solution into ultrasonic equipment, treating for a preset time, and filtering to obtain a rumex madaio makino extracting solution; mixing the radix sophorae flavescentis extracting solution, the cortex dictamni extracting solution and the rumex madaio makino extracting solution and drying to obtain the traditional Chinese medicine pre