A UE policy obtaining method includes receiving, by a first PCF network element in a VPLMN, a first URSP of an HPLMN that includes a first rule from a second PCF network element in the HPLMN, and sending, to a UE, a second URSP of the VPLMN that includes a second rule and a third rule. The first rule is used to indicate an association between first S-NSSAI, a first application, and a first DNN, the first DNN being used to identify a first DN, and the first DN allowing LBO and supporting the first application and a second application. The second rule is used to indicate an association between second S-NSSAI, the first application, and the first DNN. The third rule is used to indicate an association between the second S-NSSAI, the second application, and the first DNN.