A leakage-prevention pet urinal pad includes a urinal pad body having a stratiform structure that includes: a non-woven fabric coating layer an absorbing layer arranged below the non-woven fabric coating layer a PE film leakage prevention layer arranged below the absorbing layer and a toilet paper absorbing layer arranged between the PE film leakage prevention layer and the absorbing layer, wherein the absorbing layer includes two parts: a first absorbing layer arranged in a middle section of the urinal pad body and having a lower expansivity, and a second absorbing layer arranged at a periphery of the urinal pad body around the first absorbing layer and having a higher expansivity, thereby after absorbing water, the second absorbing layer becomes thicker than the first absorbing layer.