Conflict is inevitable in every institution especially when issues of political power are a concern but the ability to manage and prevent it from causing harm to social life matters a lot. The paper examined party crises in Nigeria's political system and their implications on sustainable development. The evaluation of the height of party crises in the Nigerian political environment which was solely based on data derived through observation and secondary sources among scholars in different walks of life as rightly expressed in media, as well as strong confirmation of party conflict in Nigeria, is an indication that the party crisis in the country is mammoth and escalating and would not stop if nothing is done about it. The political parties in Nigeria have witnessed incessant intra-party conflicts and this does not augur well in a country seeking sustainable development. Therefore, the need to explore the topic with solutions is very necessary. The study uses content analysis to conclude. To ensure that the existing party crises become a thing of the past, there should be regular and timely meetings among the party executives to discuss issues. This will help to track every arising conflicting factor beforehand. The established rules and regulations of the party should be strictly adhered to and clear. The paper also recommends for parties to shun every form of dictatorship within the party, and godfatherism, which lead to frequent defection and killings. It is concluded that Nigeria can ensure sustainable development on grounds that there is peace, cooperation, leading to unity and growth among members of the political party. When these are far at hand, the result may lead to a divided society in the long run. Keywords: Party Crises, Sustainable Development Goals, Political Party, Party Dictatorship, Nigeria.