The invention discloses a groove type solar medium-low temperature sterling thermal generating device which is composed of a parabolic groove condensing array, a linear focusing strengthening heat collection pipe, a heat-conduction working medium, an atomizer, an atomization flash tank, a pressure pump, a pressure control valve, a heat exchanging and storing device, a heat-storing medium, a middle-low temperature sterling generator, a condensing water receiver, an adjusting valve, a transmission pipeline, a complementary boiler, a condensing array cluster programmable logic controller (PLC) and a hydraulic driver or a worm and gear driver. The groove type solar medium-low temperature sterling thermal generating device uses atomized vapor, heat-conduction oil or fused salt as the heat-conduction working medium, provides heat energy for the middle-low temperature sterling generator through the heat exchanging and storing device and directly drives the sterling generator to achieve solar heat-gathering generation. The invention belongs to the field of solar heat utilization.