The invention discloses a gas spring access cover assembly. The gas spring access cover assembly comprises an access cover fixing body with the upper end being opened and an access cover which covers the opening end of the access cover fixing body; the upper tail end on the internal lateral wall of the access cover fixing body protrudes outward to form a platform; the circumference of the platform is internally concaved to form a plurality of grooves which are separated and penetrate the upper surface and the lower surface of the platform; the access cover comprises an upper cover plate and a lower cover plate which is arranged below the upper cover plate; the lower cover plate is adjacently arranged at the lower tail end on the internal lateral wall of the access cover fixing body; the external circumferential lateral wall of the upper cover plate is provided with first bosses which are matched with the groove; the first bosses are abutted against the lower end surface positions, which are not provided with the grooves, of the platform; when the access cover is removed from the access cover fixing body, a user rotates the access cover to enable the first boss arranged above the access cover to be arranged behind the grooves and the access cover is removed from the access cover fixing body.