An information reporting method, comprising: reporting, by a user equipment UE, to a network device information about a capability of supporting measurement and reporting of a 1d event of a secondary frequency; configuring, by the network device, according to the information about the capability of supporting measurement and the reporting of the 1d event of the secondary frequency, the measurement and the reporting of the 1d event of the secondary frequency; obtaining, by the UE, information about a best cell on the secondary frequency and a list of information about cells whose frequency is the same as the secondary frequency, wherein the UE works on a primary frequency and the secondary frequency, and the primary frequency is different from the secondary frequency, wherein the obtaining, by the UE, information about the best cell on the secondary frequency and a list of information about cells whose frequency is the same as the secondary frequency comprises: setting, by the UE, a cell on the secondary frequency as a best cell on the secondary frequency, and obtaining the information about the best cell on the secondary frequency; and obtaining, by the UE, the list of the information about the cells whose frequency is the same as the secondary frequency that is sent by the network device; and obtaining, by the UE, an intra-frequency measurement and reporting rule of the secondary frequency; and if a report condition is met, reporting, by the UE, according to the intra-frequency measurement and the reporting rule of the secondary frequency and the list of the information about the cells whose frequency is the same as the secondary frequency a 1d event of the secondary frequency to the network device, to notify the network device that the best cell on the secondary frequency changes. reporting, by a user equipment UE, to a network device information about a capability of supporting measurement and reporting of a 1d event of a secondary frequency; configuring, by the network device, according to the information about the capability of supporting measurement and the reporting of the 1d event of the secondary frequency, the measurement and the reporting of the 1d event of the secondary frequency; obtaining, by the UE, information about a best cell on the secondary frequency and a list of information about cells whose frequency is the same as the secondary frequency, wherein the UE works on a primary frequency and the secondary frequency, and the primary frequency is different from the secondary frequency, wherein the obtaining, by the UE, information about the best cell on the secondary frequency and a list of information about cells whose frequency is the same as the secondary frequency comprises: setting, by the UE, a cell on the secondary frequency as a best cell on the secondary frequency, and obtaining the information about the best cell on the secondary frequency; and obtaining, by the UE, the list of the information about the cells whose frequency is the same as the secondary frequency that is sent by the network device; and obtaining, by the UE, an intra-frequency measurement and reporting rule of the secondary frequency; and if a report condition is met, reporting, by the UE, according to the intra-frequency measurement and the reporting rule of the secondary frequency and the list of the information about the cells whose frequency is the same as the secondary frequency a 1d event of the secondary frequency to the network device, to notify the network device that the best cell on the secondary frequency changes. setting, by the UE, a cell on the secondary frequency as a best cell on the secondary frequency, and obtaining the information about the best cell on the secondary frequency; and obtaining, by the UE, the list of the information about the cells whose frequency is the same as the secondary frequency that is sent by the network device; and obtaining, by the UE, an intra-frequency measurement and reporting rule of the secondary frequency; and if a report condition is met, reporting, by the UE, according to the intra-frequency measurement and the reporting rule of the secondary frequency and the list of the information about the cells whose frequency is the same as the secondary frequency a 1d event of the secondary frequency to the network device, to notify the network device that the best cell on the secondary frequency changes.