A method for transmitting an uplink signal in a wireless communication system according to an embodiment of the present disclosure is performed by a terminal and includes: a step for receiving on at least one serving cell, a downlink data channel based on short transmission time interval (sTTI); and a step for transmitting Hybrid Automatic Repeat Request (HARQ)-acknowledgment (ACK) information about the received downlink data channel, wherein a cell to which an uplink control channel on which the HARQ-ACK information is to be carried is to be transmitted can be set to support an sTTI-based operation.