A method of monitoring an uplink transmission cancellation instruction and a terminal are provided. The method of monitoring an uplink transmission cancellation instruction is applied to a terminal and includes: when the terminal switches a BWP, determining, according to first preset configuration information, whether to perform monitoring of uplink transmission cancellation instruction during a BWP switching process; when the monitoring of the uplink transmission cancellation instruction is determined to be performed, monitoring the uplink transmission cancellation instruction during the BWP switching process; when the monitoring of the uplink transmission cancellation instruction is determined not to be performed, not monitoring the uplink transmission cancellation instruction during the BWP switching process.