The utility model relates to a non-pump-stopping continuous cycling and manifold controlling device for drilling a well, which comprises a continuous cycling short section and a cycling control device, wherein the upper end and the lower end of the continuous cycling short section are respectively connected with a drill pipe; and the upper stream of the cycling control device is connected with a mud pump. Two channels designed for the continuous cycling short section are respectively connected with a top drive and a bypass valve seat of and the continuous cycling short section, so as to form a system capable of cycling without stopping a pump; and mud circulating paths are switched through long distance remote control, and the switch between a bypass channel on a tool and a main channel connected with the top drive is realized by utilizing a double-plate valve on the continuous cycling short section, thereby realizing non-pump-stopping cycling in a low-density balanced well drilling process, maintaining the cycling equivalent density, and preventing accidents such as well wall collapse, overflow, sand settling, drill pipe sticking, and the like, which are caused by pump stopping.