The invention discloses a relay protection optimal configuration method for double-circuit lines on the same pole based on substation area information sharing. In intelligent transformer substation double-circuit lines, one relay protection device is arranged in each of the double-circuit lines, and all the relay protection devices are only tripped or closed in corresponding lines; the relay protection device in each of double-circuit lines acquires the analog quantity information and the electric quantity information of the line in a networking mode, and the switch of the line is turned off or turned on through the networking mode, and at the same time, the analog quantity information and the electric quantity information of the adjacent line are acquired, and the action message is protected through instation GOOSE network sharing; the acquired data are sent to a protective CPU after being synced, and the protection algorithm is achieved by the protective CPU; the double-circuit lines on the same pole are optimized. The protection of the double-circuit lines in the substation area is achieved; the information of the whole transformer substation can be obtained; the relay protection of the existing double-circuit lines on the same pole is optimized; the overall relay protection performance is further improved; the stability of the system is improved.