A method for reporting user equipment capability information and an apparatus are disclosed. The method includes: obtaining, by UE, UE capability information of the UE; determining whether a size of the UE capability information exceeds a maximum tolerance that can be processed by a PDCP layer of the UE; if the size of the UE capability information exceeds the maximum tolerance that can be processed by the PDCP layer of the UE, splitting the UE capability information into at least two pieces of part UE capability information, where each piece of split part UE capability information does not exceed the maximum tolerance that can be processed by the PDCP layer; and reporting at least one piece of split part UE capability information to a network side. According to this method, the size of the UE capability information is determined and split on a UE side, and the split UE capability information is reported to the network side for a plurality of times, so as to avoid an error caused when the UE capability information exceeds the maximum tolerance that can be processed by the PDCP layer, and ensure normal operating of a UE capability information reporting process.