Testing device for reverse osmosis membrane element

The utility model discloses a testing device of a reverse osmosis membrane element, which relates to a structural stability test of the reverse osmosis membrane element, and comprises a first membrane fixing piece connected with an end cover at one end of the reverse osmosis membrane element, and a second membrane fixing piece connected with an end cover at the other end of the reverse osmosis membrane element, the second membrane fixing piece is used for being connected with the end part of a central water collecting pipe of the reverse osmosis membrane element; the first membrane fixing piece and the second membrane fixing piece are respectively connected with the two ends of the reverse osmosis membrane, the end cover and the central water collecting pipe; the testing platform is used for respectively applying collinear testing tensile forces which are equal in size and opposite in direction to the first film fixing piece and the second film fixing piece; and the tension sensor is used for detecting the te