To study on the influence of L/D, diameter of the adsorption tube, purge tube and air tube about carbon canister, based on the ORVR canister and ordinary canister whether with single or double cavity. The results demonstrate that the similar of L/D，efficient work ability and efficient adsorption rate of the carbon canister with partition is better than the one without partition; the diameter of adsorption tube is smaller or as similar as purge tube. For ORVR canister, it is larger than purge tube and similar as air tube, which makes more effective for canister gas adsorption from the fuel tank. The vehicle purge flow test results demonstrate that the maximum purge flow of double cavity canister is bigger than that of single cavity, while the total amount of purge flow is similar with each other. The change of the quality about double cavity canister is smaller than that of single cavity. The results provide theoretical basis for canister design.