A spiral wound reverse osmosis membrane element (700), filter element and reverse osmosis water purifier, the spiral wound reverse osmosis membrane element (700) comprising: a multi-leaf reverse osmosis membrane set (100), a center tube set (200), a first end cap (300) and a second end cap (400); the center tube set (200) comprises a pure water tube (210) and a plurality of waste water tubes (220) that are arranged in intervals to each other, and the plurality of waste water tubes (220) are arranged around the pure water tube (210); each reverse osmosis membrane set (100) has a first part located in the center tube set (200) and a second part located outside of the center tube set (200), and each of the waste water tubes (220) and the pure water tube (210) are separated by a first portion of a reverse osmosis membrane set (100); the second part of the plurality of reverse osmosis membrane sets (100) forms a multi-layer membrane assembly surrounding the center tube group (200); the first end cap (300) and the second end cap (400) are respectively sheathed on both ends of the center tube set (200) and the multi-leaf reverse osmosis membrane set (100); the center tube set (200) corresponding to the first end cap (300) or the second end cap (400) is provided with a pure water outlet (320) and a waste water outlet (310).