Biprism-based monocular stereovision systems can acquire different views of the same object at a single shot, which have several advantages over conventional two-camera systems. To measure the position or recover the shape of the object, effective image pairs have to be captured first, which depends on the field of view of the system. In this paper, we propose a common method for establishing a practical biprism-based monocular stereovision system. The relationship between system parameters and object distance has been analyzed in details. The criterion for parameter optimization and procedure for system setup have been introduced. Experimental results show that our method can effectively calculate different conditions under different parameters and optimize the parameter configurations for the particular system.