The invention discloses a flexible wearable type thermoelectric power generation apparatus. The flexible wearable type thermoelectric power generation apparatus comprises an upper substrate, a lower substrate, copper foils, an upper textile layer, a lower textile layer, a thermal isolation layer, P type semiconductor particles, N type semiconductor particles, and wires, wherein the thermoelectric power generation apparatus comprises the upper substrate, the upper textile layer, the thermal isolation layer, the lower textile layer, and the lower substrate top to bottom in sequence; even number pairs of the P type semiconductor particles and N type semiconductor particles pass through the upper textile layer, the thermal isolation layer and the lower textile layer to be correspondingly welded on the copper foils which are arranged on the upper substrate and the lower substrate and are fixed at equal spacings; the semiconductor particles are connected by the wires which are connected between the upper layer copper foils to form semiconductor modules; correspondingly, the semiconductor modules are connected by the wires which are connected between the lower layer copper foils; and the first piece of the copper foil which is connected with the N type semiconductor particles, and the last piece of the copper foil which is connected with the P type semiconductor particles are led out through the wires. The flexible wearable type thermoelectric power generation apparatus can be combined with clothes, and can utilize heat, which is generated by a human body naturally, in a stable, reliable and high-conversion-efficiency manner to generate electricity and to supply the electricity to a low-power-consumption wireless sensor.