Assembly structure of reverse osmosis membrane filter element

The utility model discloses an assembly structure of a reverse osmosis membrane filter element, which is simple in structure and easy to realize, and a filter element joint and an external joint are two parts, so that the external joint with the required specification can be conveniently connected to the filter element joint according to the requirement during specific implementation, the requirement of external connection can be met, and the practicability is good. A first annular inner side wall surface is arranged in the vertical cylinder, so that the filter element joint can be propped against and limited conveniently, and random shaking and displacement of the filter element joint can be avoided; due to the arrangement of the joint cavity, wastewater between membrane layers of the reverse osmosis membrane filter element can conveniently flow to the joint cavity, and then is discharged through the joint pollution discharge communication channel and the external pollution discharge channel; the vertical cy