Double -walled sand screen device is the device that belongs to among the oil production equipment technical field of oil field, and the device is constituteed its characterized in that with center tube, next door circle and billet: be equipped with a plurality of through -hole on the middle pipe wall of center tube, the both ends of center tube are equipped with the external screw thread, the next door circle is circular steel ring, and the billet is the rectangular shape steel body, and the cross -section of billet is the splayed, the device's equipment: place in the pipe department that the center tube sclausura was located with the even cover of wearing of a plurality of next door circle, the billet encloses the outside according to certain gap evenly distributed in the next door, and the gap of billet is the cross -section seam of splayed, and the billet concreties on the excircle that encloses in the next door, fluid is through the device's gap, and the sand grain is difficult to be stopped up, and the the device surface is smooth, and compressive strength is big, in arbitrary deep well uses, destruction does not receive, rinse the convenience, can recycle.