The invention relates to the technical field of lithium battery cell laminating machinery, in particular to a high-precision lithium battery cell laminating machine, comprising a box, a feeding mechanism, a positioning mechanism, a lamination transfer mechanism, a laminating mechanism, a diaphragm unwinding mechanism, a diaphragm winding mechanism, a diaphragm cutting-off mechanism, a cell picking mechanism, a gluing mechanism, a discharging mechanism and a dust collection mechanism that are all arranged on a frame. The high-precision lithium battery cell laminating machine has the advantages that electrodes are accurately picked, a positioning table provides precise positioning, corner missing detection is effective, diaphragm deviation correcting precision is high, electrodes are rarely scratched during laminating, and dust collection is effective.