The present invention is to provide a gas mist inhaler, in which a gas introduction part of heightening pressure for supplying a gas mist is made integral with a gas mist generator in order to realize a simplified structure and cost reduction. This gas mist inhaler is provided with a gas supply means 10, a gas mist generation means 30 and an inhalation member 50, and the gas mist generation means 30 forms integrally a connection part to the gas supply means 10, a diverging part of branching a gas flow from the connection part, a liquid storage, a nozzle of discharging one-side gas flow branched by the diverging part, a liquid suction pipe of sending the liquid to a front end of the nozzle, a collision member of colliding the liquid blown up by the gas flow discharged from the nozzle with this collision member, a confluent part of joining the generated gas mist with the gas from an upward side, a gas introduction part of leading the other-side gas flow branched by the diverging part until the confluent part, and a gas mist discharge part of collecting and discharging the generated gas mist and gas.