Cast-in-place microporous water guide pavement system and construction method

The invention discloses a cast-in-place microporous water guide pavement system which comprises a water permeable bottom layer and a water permeable surface layer, the permeable bottom layer is prepared from the following raw materials: a stone material, a bottom layer binder and water, wherein the mass ratio of the stone material to the bottom layer binder to the water is (390-410): (95-105): (22-30); the water-permeable surface layer is prepared from the following raw materials: colored sand, epoxy resin, a curing agent and a reinforcing agent, and the mass ratio of the colored sand to the epoxy resin to the curing agent to the reinforcing agent is (230-250): (7-13): (1-3): (3-7), so that internal pores of the water-permeable bottom layer are larger than those of the water-permeable surface layer, and water permeating into the water-permeable surface layer is conveniently and quickly discharged from the water-permeable bottom layer; and the water permeability of the cast-in-place microporous water guide pav