The invention discloses an energy-saving heat recovery heating and ventilation device. The device comprises a device main body, wherein the device main body is composed of a first insulating layer anda second insulating layer, the heat preservation effect of the device main body is further improved through the first heat insulation layer and the second heat insulation layer, the device further comprises a heat recovery device, the heat recovery device includes a heat recovery main body, the heat recovery main body comprises an outer protective case, a front cover, a transverse heat collectingpipe, a vertical heat collection pipe, a heat collecting plate and a heat insulating layer, heat energy of sunlight can be efficiently absorbed, the device further comprises a heat energy conversiondevice, the heat energy conversion device, an external connecting pipe and an annular pipe form a loop, the heat energy absorbed by the heat recovery device is transferred into external cold water through the heat energy conversion device, the cold water is converted into hot water, and then is conveyed into the annular pipe in the device main body through the connecting pipe for heating and ventilation device using, and a circulation device is arranged, so that the circulation of water of the heat energy conversion device is more rapid and efficient through the circulation device.