A center tube group and spiral wound reverse osmosis membrane element, the center tube group comprising: a pure water tube (100) and a plurality of waste water tubes (200) arranged in intervals to each other; a pure water inlet hole (110) connected to an internal passage of the pure water tube (100) is formed on a peripheral wall of the pure water tube (100); the plurality of waste water tubes (200) are arranged around the pure water tube (100); a waste water inlet hole (210) connected to an internal passage of the waste water tubes (200) is formed on a peripheral wall of each waste water tube (200); the plurality of waste water tubes (200) are spaced apart from the pure water tube (100) so as to form an accommodating space between each waste water tube (200) and the pure water tube (100) used for accommodating a part of a reverse osmosis membrane group (300) which extends into the center tube group.