The invention discloses an automatic transmission fluid cooling pipe for an automobile, and relates to the technical field of automobile spare parts. The automatic transmission fluid cooling pipe forthe automobile comprises a pipe body and a purification device, wherein the purification device is fixedly connected to the outer surface of the pipe body and comprises a first shell and a second shell; a connecting pipe head is arranged at one end of the second shell; and one end, far away from the second shell, of the connecting pipe head is fixedly connected to a pipe body. According to the automatic transmission fluid cooling pipe for the automobile, on one hand, through using the ways of threaded connection and clamping connection, the device can be easy to install and disassemble, so that the device can be easily disassembled when requiring to be cleaned or replaced, and the installation operation and the disassembly operation can be carried out effectively and simply; and on the other hand, through arranging a gasket at the connecting part, leakage can be effectively prevented, and through arranging a layer of rubber belt on the outer surface of a screwed joint, the device can have a better leakage prevention effect, so that a double-leakage-prevention effect is better.