The unconstitutional dissolution of political parties is one of the defensive democratic mechanisms. It has been 28 years since the second revision of the constitution in 1992, but there have been no first cases of unconstitutional dissolution in Taiwan. The reason is that the requirements of the "unconstitutional party" are too vague, and the related investigation, prosecution, and claims related packages have not been established, so that the mechanism for preventing unconstitutional parties in the Taiwan area is actually difficult to operate. This article hopes that through the introduction and comparison of advanced foreign legal systems, it points out the major shortcomings of the unconstitutional dissolution system of contemporary political parties in Taiwan, and puts forward various reform proposals as the direction for the future perfection of the Political Party Law.