The invention discloses a batch streaming computing system performance guarantee method based on queue modeling. The performance guarantee method comprises five steps of dividing a process; selecting components; carrying out performance modeling; computing delay; and positioning and optimizing a bottleneck. According to the method, for the feature that load intensities have clear fluctuation in an operation process of a batch streaming computing system, key components in the batch streaming computing system are extracted, a performance model of the system is established according to a queuing theory and mathematical analysis is carried out on the model; data processing delay of the system under different load intensities is computed through utilization of the model in the operation process of the system; and when the data processing delay cannot satisfy a data processing timeliness demand, a performance bottleneck component is positioned according to the queuing theory, and a configuration optimization suggestion is provided.