A canister, for inhibiting a diffusion phenomenon in an adsorbent layer as much as possible and certainly adsorbing fed evaporated fuel to inhibit blow-by of the evaporated fuel into the atmosphere, is constituted by filling a first adsorbent layer of the canister with activated carbon A having a large evaporated fuel adsorption and a weak holding power, and filling a second and a third adsorbent layers with activated carbon B having an intermediate evaporated fuel adsorption and a weak holding power and therefore having characteristics that the residual amount of the low boiling point components in the evaporated fuel after purge is small, whereby after the high temperature standing of the canister, the discharge of the evaporated fuel into the atmosphere can be inhibited.