The invention discloses a reinforced convection heat transfer type solar distillation sea water desalting device which comprises a light-transmitting plate, a side plate and a bottom plate, wherein the upper part of the side plate is provided with a condensation water collection tank and a condensation water outlet; the inner surface of the side plate is provided with a heat storage chamber top plate and a heat storage chamber bottom plate; a heat storage material is arranged between the heat storage chamber top plate and the heat storage chamber bottom plate; an evaporation chamber is arranged above the heat storage chamber top plate; a condensation chamber is arranged below the heat storage chamber bottom plate; a baffle plate is arranged in the condensation chamber; the lower part of the side plate is provided with a fresh water outlet; the upper end opening of a noncondensable gas pipeline is arranged in the evaporation chamber, and the lower end opening is positioned in the condensation chamber above the fresh water outlet; an induced draft fan is arranged at the upper part of the evaporation chamber and positioned in one end opening of a steam pipeline; the other end opening of the steam pipeline is arranged at the upper part of the side plate positioned in the condensation chamber; and the side plate positioned in the evaporation chamber is respectively provided with a sea water inlet and a strong brine outlet. According to the invention, convection heat transfer is reinforced by the induced draft fan, the evaporation/condensation rate is high, and the steam condensation latent heat recovery/solar heat utilization efficiency is high.