The invention relates to a vehicle stability evaluation method based on stochastic time delay, belonging to the control technical field. The purpose of the invention is to apply a stochastic algorithmto select a stochastic time delay parameter to simulate the lag phenomenon occurring in the actual vehicle running process, and to judge the vehicle running stability under a fixed working conditionbased on a stochastic time delay vehicle stability evaluation method. The method comprises the following steps: a random algorithm selects a random time delay, a one-dimensional random number algorithm, two uniformly distributed random number generators are combined to obtain two-dimensional random vectors which are subject to two-dimensional uniform distribution, three-dimensional random vectorsobtained by the same principle are subject to three-dimensional uniform distribution, and the three-dimensional random number is normalized and scaled. As that random algorithm is added in the invention, a large number of experiment are not required to be repeated independently, and the comparison is recorded, the method can automatically enter a circulating process, and the delay parameters are randomly selected, so that the data transmission process is closer to reality, the simulation is more realistic, the results are recorded in the circulating process, and the time and labor are saved.