Embodiments of the present invention provide a feedback information sending apparatus and method, and a feedback information receiving apparatus and method, and relate to the communications field. The method includes: allocating, by an eNB, a same uplink shared resource to m UEs, where m>2; sending, by the UE to the eNB by using the uplink shared resource, uplink data that includes an identifier of the UE and/or buffer status information corresponding to the UE; generating, by the eNB according to successfully received uplink data, feedback information that includes the identifier of UE and/or an uplink scheduling grant; and sending, by the eNB, the feedback information by using a MAC PDU, or sending acknowledgement information by using a downlink resource indicated by a combination of an agreed feedback location and an offset. According to the present invention, a problem that an eNB cannot correctly send feedback information to each UE when the multiple UEs send uplink data by using a same uplink shared res
