The invention discloses a high-rise building rainwater collecting self-circulation utilization
system. The
system comprises a glass
curtain wall water collecting
system, a top layer water collecting system and a
water circulation system in a building, rainwater can be collected in all directions by the glass
curtain wall water collecting system and the top layer water collecting system, the rainwater is conveyed, purified and stored in floor space through a connecting pipeline network, the rainwater in a
water storage tank can be used as fire extinguishing and
sanitation water when needed, spraying cleaning or
irrigation is conducted on the two water collecting parts, and used water can be recycled. By means of the system, the problem of difficult rapid discharging of blocked rainwater inan urban center can be solved, so that multiple current problems of waterlogging,
rainfall runoff and the like in a city are solved, rainwater on-site collecting and recycling can be achieved to relieve the rain flood pressure of municipal pipelines, automatic spraying of indoor fire extinguishing,
greening and glass
curtain wall cleaning can be achieved, building water using amount is reduced, and the problem of scarce water resource is relieved.