The invention discloses a gas charge-
discharge method and device capable of adequately using
xenon gas, comprising: using a
recovery system connected with a charge-
discharge system in parallel to collect and store the
xenon gas remained in the charge-
discharge system as charging gas for next batch of arc tubes. The device is composed of a charge-discharge system and a
recovery system for collecting the
xenon gas. The charge-discharge system comprises a four-way connector, three valves respectively connected with the four-way connector, and a arc tube arranging
pipe; three valves are respectively connected with a
vacuum pumping device, a flushing gas inlet and a working gas (xenon gas) inlet; a plurality of arc tubes to be charged can be disposed on the arc tube arranging
pipe simultaneously; the
recovery system is disposed on one end of the arc tube arranging
pipe, composed by a recovery device and a valve, the valve is disposed between the arc tube arranging pipe and the recovery device. The invention can effectively enhance the
utilization rate of xenon gas during xenon gas lamp manufacture, by increasing the
utilization rate from under existing 30% up to over 95%.