Provided are a commutation control method and a commutation control apparatus. The method includes: detecting whether transient disturbance in a DC transmission system satisfies a disturbance criterion condition (101); when the transient disturbance satisfies the disturbance criterion condition, determining a maximum trigger delay angle used in a commutation operation performed by a current converter on an inverter side of the DC transmission system, the determined maximum trigger delay angle being smaller than a maximum trigger delay angle used before the transient disturbance (102); and controlling the current converter on the inverter side of the DC transmission system to perform the commutation operation based on the determined maximum trigger delay angle (103). By means of the method and the apparatus, a corresponding maximum trigger delay angle can be determined according to the degree of transient disturbance in a DC transmission system, thereby ensuring the commutation margin and avoiding a commutation failure when large transient disturbance occurs.