The invention discloses an adhesive tape processing method in film production of a slobbering machine. The surface of a steel tape, the viscosity of polyamic acid resin solution, temperature in a drying tunnel and air velocity at a nozzle outlet are all adjusted to the best state; the film stripping condition is detected; if the width of the adhesive tape on one side or two sides of the steel tape is greater than 5.0 mm, the current lip opening of the side or two sides of a die head is reduced; if the width of the adhesive tape on one side or two sides of the steel tape is less than or equal to 3.0 mm, the current lip opening of the side or two sides of the die head is increased; and if the width of the adhesive tape on one side or two sides of the steel tape is 3.0-5.0 mm, the current lip opening of the side or two sides of the die head is reduced or increased. The lip opening is adjusted for multiple times, and the amplitude of each adjustment is 5-12 microns, within an adjustment range of the lip opening. In order to keep the solvent content of a semi-finished product of the film unchanged, the temperature of the drying tunnel and/or the air velocity at the nozzle outlet of a static pressure box are adjusted when the lip opening is adjusted. In the speed adjustment of the steel tape, the moving speed of the steel tape also can be adjusted to eliminate the adhesive tape. Themethod can quickly eliminate the adhesive tape so that the slobbering machine operates normally.