The invention discloses a house water collection and treatment device, which comprises a liquid collection runner, a primary treatment system, a secondary treatment system, a liquid guidance pipeline and a water collection tank. The structure of the primary treatment system is represented as a hollowed tank body which is mainly composed of a filter screen, wherein the filter screen is connected to the tank body by virtue of a guide rod; lead grooves are formed in two ends of the tank body; the filter screen is capable of rotating around an axis along the lead grooves; a water outlet is formed in the lower end of the tank body. The structure of the secondary treatment system is represented as a hollowed tank body as well, and three filter layers are arranged in the hollowed tank body; a round water outlet hole is formed in the lower end of the tank body; the water outlet hole is connected to the liquid guidance pipeline; and by virtue of the liquid guidance pipeline, treated water is stored in the water collection tank. The house water collection and treatment device disclosed by the invention has the beneficial effects that a vertical wall surface serves as a rain collection face, and rainwater is subjected to collection and dual-filtration, so that the rainwater is treated into domestic water for a family in daily life, and the utilization of a water source is achieved to the greatest extent; and the house water collection and treatment device not only has a significant water-saving benefit but also has obvious social and environmental benefits.