A Method and Apparatus for measurement and conditional reconfiguration in non-terrestrial network is provided. The method includes receiving a measurement configuration IE and a conditional reconfiguration IE, performing conditional reconfiguration evaluation based on the measurement configuration IE and a conditional reconfiguration IE, considering the first cell as a triggered cell and applying the stored condRRCReconfig IE of the first cell. In the evaluation, at least two comparisons are performed based on a distance hysteresis and distance between the terminal and one or more reference positions.