The present invention relates to a spraying mechanism adapted to a gas canister, comprising: a) a spray ring having a hole through which the gas is sprayed out； wherein said spray ring is in fluid communication with said canister, and wherein said spray ring is adapted to be worn on a finger； b) an inner tube which is mounted on a tube of said canister； c) safety latch housed in a safety latch house； and d) an operation button, which is activated after the safety latch is released.
