Steel rail microadjuster

The invention provides a steel rail microadjuster which can accurately adjust the geometry of a steel rail and is provided with convenient operation, accuracy and good stability. The steel rail microadjuster is a symmetrical structure at the left and right, and a left part is connected with a right part through a cross connecting screw rod; a base is connected with a base through a horizontal regulating screw; a rail base inclination regulating screw is arranged on the base; the rail base inclination regulating screw is connected with a height regulating screw through an adapter sleeve; and the height regulating screw is arranged on a steel rail claw which is fastened with the steel rail through a steel rail claw locking screw. The steel rail microadjuster can accurately adjust the geometry of the steel rail and the accuracy can reach 0.05 to 0.1 mm; and the operation is convenient and labor-saving; and the adjustment can be realized quickly and accurately and the stability is good so as to enhance the operation accuracy, largely reduce the labor intensity and shorten the construction cycle. The steel rail microadjuster is especially applicable to the construction of ballastless track systems of high-speed railway.