The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system for supporting higher data rates than 4th-Generation (4G) communication systems, such as Long Term Evolution. An apparatus and method for demodulating a hybrid modulation symbol is provided for use in a wireless communication using the hybrid modulation scheme. The apparatus includes a control channel receiver configured to acquire a hybrid modulation scheme change information from a control information received through a control channel, a constellation re-configurer configured to reconfigure a constellation diagram for use in demodulation with the hybrid modulation scheme change information provided by the control channel receiver, and a demodulator configured to demodulate a hybrid modulation symbol and a modified hybrid modulation symbol input when a reconfigured constellation diagram is received from the constellation re-configurer based on the reconfigured constellation diagram.