This study aims to weaknesses in the regulation of the Statutes and Bylaws (AD/ART) of political parties' Budget Testing in the current Indonesian constitutional system and how to reconstruct the law in order to fulfill the justice value. This type of research is descriptive qualitative. This study uses 4 problem approaches, namely the statute approach, the historical case approach, the comparative approach to law, and the conceptual approach. The legal materials used in this research are primary legal materials and secondary legal materials with data collection methods through library research. Data analysis in this study used qualitative analysis. The results show that the The Weaknesses referred to are in the basic regulations of political parties in the form of Articles of Association and Bylaws (AD/ART) of The Political Parties which are considered material and substance that cannot be legally touched, especially in the form of reviewing laws and regulations in the Supreme Court (MA). Therefore, the Statutes and Bylaws (AD/ART) of political parties must be reconstructed by placing the Statutes and Bylaws (AD/ART) of political parties into the types of laws and regulations as referred to in Article 8 Paragraph (1) of Law Number 12 of 2011 concerning Formation of Legislation as amended by Law Number 13 of 2022 concerning Formation of Legislation and amending provisions in Law Number 2 of 2008 concerning Political Parties as amended by Law Number 2 of 2011 concerning Political Parties.