This invention relates to an easy-to-carry gas supply method and structure thereof, in which the method comprises follwoing steps: providing a gas supply bottle structure providing a specific amount of water and powder of specific gas sending the water and the powder respectively from the placement part of the gas supply bottle structure into the inner space to be mixed and releasing the gas generated by the mixture from the releasing part to a respirator for the user to breath. The gas supply bottle structure comprises a bottle body, a placement part, a releasing part. The implementation of aforementioned steps of the method through the gas supply bottle structure provides a design which is easy to carry and can be repeatedly used.
