The device for fixation of tension ceilings is made of polymeric materials and includes fixation profile with a horizontal ledge and a harpoon with head. Fixation profile has two lower vertical ribs, one of those is adjacent to the wall and the other one is remote from wall with formation of an opened at beneath cavity. The inside of the vertical rib of the fixation profile is equipped with a basic locking lug and has auxiliary fixing teeth. The end section of this edge has a chamfer formed at acute angle. The inside of the vertical rid is adjacent to the wall, is limited with auxiliary teeth and is shifed into the cavity. The harpoon in the final section is equipped with two-sided chamfers and one-sided lug. In conjunction of harpoon body with his head a groove is provided. In the upper section of the retaining profile a closed cavity is made for rigid fixation with fasteners.
