日本宪法在三权分立的原则下,为确保司法权的独立地位,将司法权统一归属于法院。并赋予法院违宪审查权。文章论述了日本作为保障宪法的最高法规性、确保宪法的实效性制度的违宪审查权,特别是宪法第81条的解释和“司法”概念的认识。探讨了宪法审查权的意义及性质、违宪审查的对象、违宪判决的效力。以期对我国相关法律制度的完善有所助益。 Under the principle of the separation of powers, the Japanese Constitution, in order to ensure the independent status of the judicial power, reunifies the judicial power with the courts. And give the court the power to review the constitution. The article expounds Japan’s understanding of the unconstitutional reviewing power as the highest statutory guarantee of the constitution and ensuring the actual effectiveness of the constitution, especially the interpretation of Article 81 of the Constitution and the concept of “justice”. It discusses the meaning and nature of constitutional review, the object of constitutional review and the effect of unconstitutional judgment. With a view to improving the relevant legal system in our country.