This study is to develop a ring binder which deals with punching process and ring pressing process consecutively for twin ring binding. The purpose of this study is to develop a vertical ring binder which operates punching and binding process in unification by using a power source. It is expected to reduce the personnel expenses more than 40% by uniting the two ring binding processes, which are imported products, into this trial manufacture. It is also expected to decrease the diversion of foreign currency by substituting imported electric ring binder, which costs almost 10 billion won in a year, to this binder.