A carbon recovery system and method improve purity of carbon dioxide when it is recovered and include an electrochemical cell including a working electrode and a counter electrode. When a given voltage is applied between the working electrode and the counter electrode, electrons are supplied from the counter electrode to the working electrode. The working electrode then combines with carbon dioxide upon receiving the electrons supplied thereto. An adsorber accommodates the electrochemical cell and introduces a carbon dioxide-containing gas to itself. A liquid supply section supplies liquid to the adsorber with a given voltage being applied between the working electrode and the counter electrode. A discharge section discharges the liquid supplied from the liquid supply section and carbon dioxide-removed gases from the adsorber with the given voltage being applied between the working electrodes and the counter electrode.