This is architectural water supply and drainage design for NanFang mansion. It’s 60.7m tall with 14 floors and 1 basement. This design includes water supply system, fire safety systems, drainage systems and rainwater system.The living water system covered:to determine the region and supply way,choose the pipe diameter of water supply,the type of underground pool and water pump etc.The details of fire fighting system:fire hydrant region,choosing the diameter and stuff of fire fighting pipe.Designing the fire hydrant bin,automatic alerting valve,sprayer,compression release valve,decompression board,hydrant pump and sprayer pump etc.The main design of indoor drainage system covered: devided flow,professional breather pipe,choosing the diameter and stuff of drainage pipe.the waste water let out alone in first floor and the design of collector well and drainage pump.