The utility model provides an air adsorbs formula base material separation hopper, the cross -section of hopper is inverted triangular structure, and absorption formula vibrator has been arranged to the circumference of hopper, the impurity filter sieve sets up in the bottom of hopper, and base material holds the chamber and sets up below the hopper, the air adsorbs discharging channel and air and adsorbs feedstock channel and constitute connectivity structure, and this connectivity structure be the rugosity, and at first the level is vertical more upwards arranges along the level again for connectivity structure, at last vertically arranges downwards, driving motor is connected with the air pump, and the air pump is established and is adsorbed feedstock channel horizontal bending department at the air, the air adsorbs the terminal of feedstock channel and expects carefully that it is connected to hold the chamber. The utility model discloses utilize the drive motor drive air pump, the air pump utilizes the air negative pressure to select the base material that base material holds the intracavity through connectivity structure, and then realizes the separation of thickness base material, has effectively promoted separating rate and automatic level.