Preparation method of medical coal tar, product and application

The invention discloses a preparation method of medical coal tar as well as a product and application of the medical coal tar, and the preparation method comprises the following steps: uniformly mixing coal tar with a sodium laureth sulfate-ethanol aqueous solution, and fully stirring at room temperature to obtain a first mixed solution; standing the first mixed solution for preset time, taking supernate, filtering the supernate, and removing asphalt particles to obtain a second mixed solution; adding an equal-mass sodium hydroxide aqueous solution into the second mixed solution, and uniformly stirring; centrifuging to layer the liquid, and taking a water phase part to obtain a third mixed solution; and adding sodium laureth sulfate into the third mixed solution, stirring and dissolving, adjusting the pH value of the third mixed solution to be acidic by using hydrochloric acid, centrifuging to layer the liquid, and taking the water phase part to obtain the medical coal tar. According to the present invention,