Slag cooler and slag discharging device thereof

The utility model provided a slag cooler and a slag discharging device thereof. The slag discharging device of the slag cooler comprises a slag discharging barrel body (10) and a valve device installed in the slag discharging barrel body (10), and the valve device has an opening state and a closing state. Due to the technical scheme, the problem that in the prior art, hot slag of the slag cooler can be discharged easily can be effectively solved.