Abstract: The structure, control system and running state of HAUNI superheated steam drier HDT-LE were introduced and compared with HXD system.In HDT, cut tobacco directly entered via a feeder, the fluctuation of moisture content of output cut tobacco was reduced as a result.Traditional cut tobacco(conditioner)(HT) was replaced by an unique steam ejector, the pipe system was simple and tobacco was well expanded.The technical control comprised six control systems, namely pressure, oxygen content, natural gas flow, air temperature, moisture content and steam flow control systems.The control mode was simple and the parameters were readily adjustable.