Nitrogen-doped Co3O4 nanosheets (N-Co NS) were synthesized by sacrificial template method. The morphological structure and chemical composition of the obtained materials were characterized by Transmission electron microscopy (TEM), Atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). In addition, the catalytic performance of the prepared catalysts was evaluated by catalytically activating peroxymonosulfate (PMS) to degrade bisphenol A (BPA) in water. Compared with Co3O4 nanoparticles (Co NP) and Co3O4 nanosheets (Co NS), N-Co NS exhibits higher catalytic performance according to the experimental results. Under the reaction conditions that the dosage of PMS is 2 mM and the initial concentration of BPA is 50 mg L^-1, N-Co NS completely degrades BPA in water within 10 minutes, indicating that N-doping and two-dimensional nanosheet structure are beneficial to the improvement of catalyst performance. N-Co NS still has high activity in complex water chemical environment proved by the pH and ions effect experiments. Besides, the high oxidative activity hydroxyl radicals and sulfate radicals were produced in the reaction system, which was confirmed by the trapping experiments and Electron paramagnetic resonance (EPR) tests.