A method and an apparatus for collecting and analyzing session performance data in a wireless communication system are provided. The method includes receiving a first request message for requesting network performance analytics from a policy control function (PCF), transmitting a second request message for requesting data collection for the network performance analytics to at least one network function (NF) of a first network related to session performance of a user equipment (UE), receiving a first notification message including session performance data of the first network and an indicator indicating that the UE moves to a second network from the at least one network function, and transmitting, to the PCF, a second notification message including a performance analytics result of the session performance data.