Auxiliary device of door lock fingerprint gatherer

The invention discloses an auxiliary device of a door lock fingerprint gatherer. The auxiliary device comprises a scrubbing mechanism arranged at a left side of a fingerprint acquisition screen, a liquid conveying mechanism arranged at a right side of the fingerprint acquisition screen, and a drying mechanism arranged at an upper end of the fingerprint acquisition screen, wherein the scrubbing mechanism comprises a first casing, an oil cylinder, a connection head and a scrubbing head, the liquid conveying mechanism comprises a second casing of which an upper end surface is opened, a liquid storage bottle accommodated in the second casing, and a first output unit and a second output unit which penetrate through an upper surface of the liquid storage bottle, the drying mechanism comprises a third casing fixed on a fingerprint acquisition device and a fan accommodated in the third casing, after a touch press switch is electrified, a piston rod horizontally extends rightwards to a stroke terminal point, glasses c