The invention provides an intelligent circulation anti-icing method which can be applied to two to twelve and more split lead power transmission lines to transmit current. The method can be applied to any icing tension line section of a power transmission line and can accurately judge whether the icing prevention needs to be started or not automatically according to the line icing condition to realize the automation and the intellectualization of the whole anti-icing process. The method comprises the following steps of: mounting a control device; detecting the environmental parameter and judging whether the current environment needs to start the icing prevention or not by the control device; grouping sub-leads of the split lead; and when the anti-icing operation needs to be started, sequentially converging currents of all split leads at the transmitting end of the anti-icing section on each group of sub-leads according to preset interval time by the control device. The invention increases the transmission current of the sub-leads, achieves the aim of icing prevention by joule heat and can realize the automation and the intellectualization of the local or whole anti-icing process without adding an ice thawing power supply and the icing detection on the line and damage the icing condition before the generation of ice.