The invention discloses a three-remote automatic testing method for a power distribution terminal. The method comprises the following steps that power distribution terminal three-remote automatic testing equipment is connected with the tested power distribution terminal, and first communication connecting is established; an experiment item is set for the power distribution terminal three-remote automatic testing equipment, and testing of the tested power distribution terminal is carried out; and the remote control state and the current-voltage output gear of the power distribution terminal three-remote automatic testing equipment are controlled, a testing scheme and a strategy for executing the scheme are set, the information of the tested power distribution terminal is obtained by the first communication connecting, then whether the functions and the performance of analog acquisition, digital quantity acquisition and control quantity output of the tested power distribution terminal meet the requirements are obtained, and meanwhile a testing report is led out. According to the three-remote automatic testing method for the power distribution terminal, the three-remote functions and the three-remote performance of the power grid terminal can be automatically tested based on the testing scheme, testing efficiency is improved, and meanwhile testing cost is lowered.