A frictional water-based environment-friendly paint layer removing agent is composed of a compound main solvent, a co-solvent, an activator, a surfactant, frictional granules, an anti-aging agent, a penetrating agent, a thickening agent, a corrosion inhibitor, deionized water and ethanol. The paint removing agent is convenient and easy to use, can effectively remove various common paint layers and is free of damages, such as corrosion, on a base material, is low in volatility and has no toxicity on human body during use; the layer removing agent is free of attachments, such as paraffin, kerosene and the like, so that secondary spray coating of a paint layer can be conveniently carried out; by adding the frictional granules to the paint layer removing agent, friction force of the paint layer is increased, so that after expansion of the paint layer, artificial paint removal is convenient; the paint layer removing agent has significant effect on a paint layer which is firm and has high adhesion force. The paint layer removing agent is safe and environment-friendly, is free of chlorohydrocarbon-type organic solvents and is low in cost.