To provide a self-travelling recycling machine capable of suppressing the temperature rise of liquid reducing agent in a liquid reducing agent tank.

The liquid reducing agent tank mounting part 17 is arranged in the upstream side of a diesel engine 12 in the flowing channel of cooling wind generated by a cooling fan 12a arranged in the diesel engine 12, below the machine chamber 4, and inside in the lateral width, the space in the machine chamber 4 and the space of the liquid reducing agent tank mounting part 17 are continuously formed such that at least a part of the cooling wind flowing to the diesel engine 12 passes through the space for mounting the liquid reducing agent tank 20, and the heat radiation of the liquid reducing agent tank 20 is accelerated by the cooling wind passing through the vicinity of the liquid reducing agent tank 20.