The present invention relates to an apparatus and method for power saving of a terminal in a wireless communication system and, particularly, to an apparatus and method for power saving of a terminal in a wireless LAN system. A method according to an embodiment of the present invention, which is a data transmission and reception method for power saving of a terminal in a wireless LAN system access point, may comprise the steps of: transmitting a control frame including information for channel bonding power saving control; when there is data to be transmitted from a specific terminal, determining whether the corresponding terminal is in a state where a channel bonding power saving control function is activated; when the terminal is in a state where the channel bonding power saving control function is activated, checking whether the terminal is in a dynamic mode; and when the terminal is in the dynamic mode, configuring the data to be transmitted as a data frame for transmitting the data in a channel bonding scheme, and transmitting the data frame.