The invention provides a metro waste heat recovery intelligent power generation system, including a carriage, a heat drawing channel, a microcontroller, a temperature difference power generation device and an accumulator, wherein a heat exchanger is arranged on the top of the carriage, one end of the heat drawing channel is connected with the heat exchanger while the other end is connected with the temperature different power generation device which is fixed outside the carriage by a support, and the accumulator is connected with the temperature difference power generation device. The metro waste heat recovery intelligent power generation system collects waste heat of a metro engine, a lighting system, a stretch-breaking system, operation equipment and millions of passengers, and converts into electric energy by the temperature difference power generation device; particularly when the metro waste heat recovery intelligent power generation system operates during refrigeration in summer, heat exhausted to the environment originally is completely recovered by the total heat recovery technology, the heat energy is converted into the electric energy and stored by the accumulator. The life with low-carbon and low-cost energy is realized, and the purpose of saving energy and reducing consumption is achieved. In addition, through the microcontroller, the full-automatic control of the whole system can be realized.