The invention provides a method, device and system using optical signals to charge active cards. The method using the optical signals to charge the active cards mainly comprises the steps that (1) a plurality of active cards are distributed on a shell body of a charging device; (2) optical energy is obtained by an illuminator of the charging device, and the illuminator sends the optical signals to the shell body; (3) photovoltaic conversion panels on the active cards receive the optical signals sent by the illuminator, convert the received optical signals into electric energy, and use the electric energy to charge the active cards. The method, device and system using the optical signals to charge the active cards can achieve the purpose that charging can be conveniently and rapidly carried out on a large number of active cards at the same time.