The invention discloses a cold-hot water mobile phone charging and coal/gas stove semiconductor temperature difference power generation device, which comprises a superconductive heat tube, a semiconductor cooling plate, a heat collector, a storage battery, a current regulator, a power supply connecting seat, a home appliance connecting seat, a charging regulator, a cold water cup, a hot water cup, a stove, a heat source, briquets, carbon, firewood or fuel gas, an insulating ring a cold water tank, a water discharge/supply value, a drainage valve, an electromagnetic valve, a fan, a light emitting diode lamp, a power supply switch and a computer/television. The device of the invention can generate power upon pouring hot water and running water in the two cups respectively to charge the mobile phone and, in the coal/gas stove, uses waste heat to generate power. The device can be placed in any facility cooled by water (or air) to generate power, has obvious waste heat recycling, energy saving and consumption reducing effects, is easy to manufacture, long in service life, reliable, low in cost and convenient to popularize and promote, has energy-saving and emission-reducing social and economic benefits, represents an inevitable development trend at present and in future. Thus, the device has a great significance.