The invention relates to a control valve with silencing devices. The control valve comprises a first pipeline, a second pipeline and a valve body. The first pipeline and the second pipeline are arranged in the valve body. A plurality of accommodating cavities are formed in the tail end of the second pipeline and communicate with inserting openings in the surface of the second pipeline. The silencing devices are arranged in the accommodating cavities. A plurality of through holes are formed in each silencing device and penetrate through the silencing device. The top and bottom of each accommodating cavity are provided with convex parts. A concave part is arranged on the side surface of each silencing device. The convex parts are connected with the concave parts in a matched mode. By means of the control valve with the silencing devices, noise of fluid in the pipelines can be lowered effectively, and meanwhile the flowing speed of the fluid can be regulated by increasing or decreasing the number of the silencing devices according to the specific flowing speed and using requirements. In addition, the control valve is convenient to install and operate, low in cost and beneficial for use and popularization.