Solar thermal engineering system

The invention provides a solar thermal engineering system which comprises a solar heat collector, water tanks, a heat-transferring medium input manifold and a heat-transferring medium circumfluence manifold, wherein each water tank is communicated with a tap water pipeline; a liquid heat-transferring medium heating chamber of the solar heat collector is internally stored with a liquid heat-transferring medium; the heat-transferring medium input manifold and the heat-transferring medium circumfluence manifold are both communicated with the liquid heat-transferring medium heating chamber of thesolar collector; the heat-transferring medium input manifold is provided with a heat-transferring medium input branch pipe; the heat-transferring medium circumfluence manifold is provided with a heat-transferring medium circumfluence branch pipe; each water tank is internally provided with a heat-transferring medium passing pipe; and each heat-transferring medium passing pipe corresponds to a heat-transferring medium inpu