A method and an apparatus for a partial sensing operation in sidelink communication are disclosed. An operating method of a transmission terminal includes the steps of receiving configuration information of an additional partial sensing window from a base station; determining one or more candidate resources by performing a sensing operation in a sensing window; identifying an occupancy state of at least one candidate resource among the one or more candidate resources by performing a partial sensing operation in the additional partial sensing window configured according to the configuration information; and determining a first candidate resource among the one or more candidate resources as a transmission resource in consideration of the occupancy state within a selection window.