The invention discloses a scheduling signaling sending and response feedback method, system and equipment, relating to the field of wireless communication and being used for increasing the transmission efficiency of a multicarrier polymerization system. In the method, a base station carries counting information into a downlink scheduling signaling to be sent to a terminal and carries the transmission situation information of a downlink data packet into an uplink scheduling signaling to be sent to the terminal; the terminal determines the length of an acknowledgement /negative acknowledgement ACK/NACK sequence needing to be sent in an uplink subframe according to the transmission situation information of the downlink data packet, and the terminal determines the position of the ACK/NACK information corresponding to the downlink data packet in the ACK/NACK sequence according to the counting information; and the ACK/NACK sequence is generated according to the length and position information, and the ACK/NACK sequence is sent to the base station. The transmission efficiency of the multicarrier polymerization system can be increased through the method, the system and the equipment.