Data transmission method and device, electronic equipment and storage medium

The invention provides a data transmission method and device, electronic equipment and a storage medium, and the method comprises the steps: continuously executing the adjustment operation of a congestion threshold value when a data unit is continuously transmitted to a receiving end, and the data unit is data in a data transmission window; wherein one time of the operation of adjusting the congestion threshold comprises the following steps of: based on the congestion threshold, executing at least one time of size increasing operation on the data sending window until a plurality of pieces of first information aiming at the same data unit are received, determining that transmission congestion occurs in the transmission of the data unit, and adjusting the congestion threshold, reducing the size of the data sending window to a first preset value; the first information is sent by the receiving end, and the first information is used for representing that the receiving end confirms to receive the data unit. By cont