成文法以填充的方式实现对法制的完善 ,判例法以生长的方式实现对法律的完善 ,这两种方式都各有优缺点。实践中 ,西方两大法系采取将成文法与判例法有机混合的方式来实现对法制完善。由于起主导作用的法律传统的影响 ,成文法和判例法在两大法系国家法制完善的具体过程中所起的作用与地位是有所不同的。两大法系的实践证明成文法与判例法的适当结合是完善法制的有效手段 The statutory law to fill the legal system to achieve perfection, case law to grow the way to achieve legal perfection, both ways have their own advantages and disadvantages. In practice, the two major legal systems in the West adopt the method of organic combination of statutory law and case law to improve the legal system. Due to the dominant legal tradition, the role of statutory law and case law in the concrete process of perfecting the legal system in the two legal systems is somewhat different. The practice of the two legal systems proves that the proper combination of written law and case law is an effective way to perfect the legal system