The invention discloses a single-control double-way linkage adjustable delay hydraulic valve which comprises a valve body. The interior of the valve body is sequentially divided into an oil inlet chamber, a first oil outlet chamber and a second oil outlet chamber from left to right; the oil inlet chamber, the first oil outlet chamber and the second oil outlet chamber communicate sequentially; a valve element is jointly rotatably arranged in the oil inlet chamber, the first oil outlet chamber and the second oil outlet chamber; an oil inlet groove is formed in one section of side wall, located in the oil inlet chamber, of the valve element; and an oil outlet groove is formed in one section of side wall, located in the first oil outlet chamber, of the valve element. According to the single-control double-way linkage adjustable delay hydraulic valve provided by the invention, an oil circuit is arranged in the valve element and the second oil outlet chamber, so that the number of parts contacting hydraulic oil is reduced, the influence on a hydraulic oil brake effect due to impurities is reduced, and the linearity of oil pressure is increased through the linear oil circuit and is easy to control; and through the rotation of an adjusting rotary knob, the compressing force of an adjusting spring is changed through an adjusting plate, so that the pressure required for the oil-pressuremovement of an adjusting block is changed, namely, the front wheel brake delay time is changed, and the brake safety is improved.