This Paper by use of the distribution theorems of pseudorandom Points by the author and devolped Method of Separated Regions gives a precise Substitufion of Separated Regions of Bands (SSRB) and acquires more simple and precise deviation expression of two dimesions for pseudorandom numbers.

This paper takes the large prime numbers as a module, the primitive roots of the module will be multiplicator and introduced concepts of Bands and Quasi-Symmetrical Distribution. Based on the distribution graphs of the pseudorandom points are generated by the multiplication congruential method gives nine distribution theorems and a deduction. Therefore, this paper will creat conditions for studies in connection with the pseudorandom points and get more simple and pricise deviation expression of the pseudorandom numbers.