The embodiments of the present invention provide a charging method, device and system in the field of communications technologies. The charging method includes: learning that a user equipment accesses a network beyond an applicable condition; and charging the user equipment. The embodiments of the present invention enable the network operator to charge the user equipment for the access to the network beyond the applicable condition, thereby making it convenient for a user to access the network beyond the applicable condition and providing proper technical support for the charging management of the network operator.