The invention discloses a solar heat collecting device. The solar heat collecting device comprises a bottom frame (6) and a heat collecting plate (1) arranged on the bottom frame (6); and the solar heat collecting device further comprises a heat insulation heat conduction mechanism, and the heat insulation heat conduction mechanism is arranged in the bottom frame (6). The solar heat collecting device realizes the effect of being used for a long time, is simple in structure, solves the problems of low heat utilization rate and low heat conversion rate of a traditional solar collector, and is high in heat conversion rate.