PURPOSE: A liquid material mixing and coating facility for processed feed is provided to reduce the cleaning time and period of the facility by including a drum coater operated by the external rotation driving power. CONSTITUTION: A liquid material mixing and coating facility for processed feed comprises the following: a drum coater(100) rotated by the external rotation driving power for mix and coat the processed feed and a liquid raw material, by inserting the processed feed(2) to the inside of the coater and spraying the liquid raw material(3); a liquid raw material supplier supplying the liquid raw material to the drum coater; a hot water supplier supplying hot water to a measuring agitation unit for stirring, and hot air to the drum coater; a drum(110) with opened both sides, including a guide rail protruded from the outer circumferential edge; and an inlet hopper and an outlet hopper formed on both sides of the drum using bearings.
