Embodiments of the present invention provide a congestion control method and apparatus that are applied to a sending terminal. The method comprises the steps of determining whether a target flow to which a target sub-flow on a target link belongs is a time delay sensitive flow, wherein the target link is a congested link, and the target sub-flow is any one of sub-flows transmitted by the target link; if yes, acquiring transmission time of non-transmitted data transmitting the target sub-flow in a first congestion window, wherein the first congestion window is a congestion window of the current target link for the target sub-flow; determining a time delay parameter of the target sub-flow according to the transmission time, wherein the time delay parameter is used for representing an urgency degree of the target flow; and according to the time delay parameter, adjusting the congestion window of the target sub-flow. Through adoption of the congestion control method and apparatus, link congestion is prevented, further, the transmission time delay of the time delay sensitive flow is shortened.