This thesis presents a method that extracts the values of elements from the layout of multi-layer microwave passive circuits. We can calculate the values of capacitance and inductance rapidly, and then check the correctness of the circuits by using calculated values. Because capacitance and inductance are connected by via in layouts, we must pay attention to the effect among them in the process. Therefore, we need to handle situations where elements are connected through vias after getting the values of these two. After that, we build the connection table and transfer it to a SPICE format circuit file. Finally, we can check the correctness between the circuit and the layout by using the program developed before.