Abstract: Because of the difference of simulation method and theoretical analysis measure, the analysis results of control algorithms, which pulished on references, are incomparable. In order to eliminate the "incomparability", a general quantitative criterion for the analysis of robustness of control algorithms is presented, and the robustnesses of two kinds of Model Algorithmic Control (MAC) algorithms-Basic MAC and Incremental MAC are analyzed by this way. The results show that the quantitative criterion is compatible with the results of their simulations and real-time applications, and it is suitable for the theoretical research of most of control algorithms.