The family has no requirement for the size of the indoor swimming pool. It is designed according to the owner's preference, but it is too small to swim. The recommended width is 2.5 to 3 meters. The swimming pool that can swim is actually the most important length, because the swimming pool is too short to swim and the entertainment and fitness effect cannot be achieved. Look at personal preferences in depth. The depth of swimming pool is generally divided into shallow water area 1.2- 1.4m and deep water area1.6-2.0m. If children need to play with water at home, they can build a Roman ladder.