The invention relates to a physical therapy device for pets. To avoid affecting the effects of the electrotherapy and the massage since more hair on the body of pets, the invention deposits a conductive platform that electrically connects to a current output unit so that the pets are laid on the conductive platform, and first brushes of a comb body separately electrically connect to the current output unit. When the first brushes contact to the body of the pets, the conductive platform, the pets, the first brushes and the current output unit form a conductive circuit together so that the pets can gain the complete effects of the electrotherapy to improve the disadvantages of the prior art.
