The present invention provides a method and system for reporting neighbor cell information. The method includes: a network side sending a measurement configuration and reporting information of a drive test to user equipment; the user equipment performing the drive test, and reporting drive test results containing information of neighbor cells around the user equipment to the network side when a reporting triggering condition is satisfied (201). In the present invention, by using a Minimize drive test (MDT) measurement event in the drive test, the information of neighbor cells around the user equipment is discovered and reported to the network side for maintenance, and since the network side obtains the information of neighbor cells around the user equipment in time, the effectiveness of the user equipment performing the cell handover is guaranteed, thereby enhancing a network performance of a communication system.