Regioselectivity deposition method is developed to pattern silver electrodes facilely and efficiently by solution-process with high resolution (down to 2 m) on different substrates in A4 paper size. With the help of this method, large-area, flexible, high-performance polymer field-effect transistors based on the silver electrodes and polyimide insulator are fabricated with bottom-contact configuration by all-solution processes. The polymer devices exhibit high performance with average field-effect mobility over 1.0 cm2 V-1 s-1 (the highest mobility up to 1.5 cm2 V-1 s-1) and excellent environmental stability and flexibility, indicating the cost effectiveness of this method for practical applications in organic electronics.