The invention provides a crushing structure for a coating pre-processing device in an automatic flexible production line of receivers. The crushing structure comprises a cylindrically structured pre-processing mechanism shell; in the pre-processing mechanism shell, a first separation plate, a second separation plate and a fifth separation plate are horizontally arranged in sequence from top to bottom; the space in the pre-processing mechanism shell is separated into a crushing cavity and a adjustment and control cavity; one end of a rotary fixing shaft is rotatably fixed on the top of the pre-processing mechanism shell; the other end of the rotary fixing shaft is rotatably fixed on the fifth separation plate; a crushing mechanism is arranged in the crushing cavity; and a plurality of blanking holes are arranged on the second separation plate. The crushing mechanism provided by the invention is used for crushing raw materials of a coating in a pre-processing process; therefore, the production efficiency is increased; and the energy efficiency is increased.