马克思主义政党领导国家政权以组织领导为基础。党的组织体系的触角延伸至各类非党组织，构建起一种跨领域的党政复合结构。它与党的领导的全面性原则和法治化原则相适应，为党领导一切工作提供了载体，为非党组织坚持党的领导与依法履职搭建了平台，多维度地展现出中国共产党领导体制的组织形态。中国共产党的领导体制经历了一个不断调适和完善的过程。民主革命时期，党的一元化领导体制初步建构起来。社会主义建设时期，党的领导体制趋向高度集中。改革开放后，党的领导体制得以恢复重建，经过党政职能分开，党政关系逐渐规范化。中国特色社会主义进入新时代，党的领导的法治化水平不断提升，党的组织和党的领导的全覆盖基本实现，党的全面领导体制进一步完善。党中央决策议事协调机构以领导小组、委员会为基本组织形式，基于“单位成员制”，建构起系统内相关部门负责人聚集的一个复合体。它具有跨部门、跨区域、政治规格高等特征，深度参与国家的重要决策议程，是党中央集中统一领导重大工作的组织载体，构成了党对重大工作领导体制的重要环节。党政机构的复合体是以党的工作机关为主导、整合相应领域政府部门形成的复合结构。它实现了党的机关对本领域工作的统筹管理。党政机构基于归口管理、合署办公、合并设立等方式，在党的组织工作、宣传文化工作、统战工作、政法工作等领域，形成了党委统一领导、党的机关牵头协调、有关方面各负其责的整体性工作格局。党的组织嵌入非党组织所形成的复合结构，为党领导国家和社会各项工作提供了载体。在国企、公立医院和高校等单位的内部治理结构，党委发挥领导作用。在党和国家机关、实行行政领导人负责制的事业单位、“两新”组织中，基层党组织发挥战斗堡垒作用。设置在国家机关、中管企业、中管金融企业等非党组织中的党组（党组性质党委），发挥领导作用。民主集中制是党政复合结构的根本运作机制，具体运作机制包括党政机构的权责分工、干部兼任和交叉任职、请示报告制度和集体领导制度。党政复合结构具有设置范围的广泛性、组织形态的多元性、党政班子依法履职的统一性、党组织与行政科层的协同性等组织特性，这些特征是维系党的全面领导、实现党的领导法治化的坚实支撑，也是党的组织优势和党的领导优势在党治国理政过程中转化为实际效能的重要保障。

Marxist parties lead state power on the basis of organizational leadership. The tentacles of the CPC’s organizational system extend to all kinds of non-Party organizations, building a kind of cross-field compound structure of Party and government. It is compatible with the principle of comprehensiveness of the CPC’s leadership and the principle of rule of law, provides a vehicle for the Party to lead the state and society, builds a platform for non-Party organizations to adhere to the CPC’s leadership and perform their duties in accordance with the law, and shows the organizational form of the CPC’s leadership system in a multi-dimensional way.The leadership system of the CPC has undergone a process of continuous adaptation and improvement. During the period of democratic revolution, the CPC’s monolithic leadership system was initially constructed. During the period of socialist construction, the CPC’s leadership system tended to be highly centralized. After the reform and opening up, the CPC’s leadership system was restored and rebuilt, and after the separation of Party and government functions, the relationship between the Party and government was gradually standardized. In the new era of socialism with Chinese characteristics, the rule of law of the Party's leadership has been accelerated, the full coverage of the Party's organization and Party leadership has been basically realized, and the Party's comprehensive leadership system has been further improved.The Party Central Committee's decision making and coordination body is organized in the form of leading groups and committees, and based on the "unit membership system", it is a complex body that gathers the heads of relevant departments within the system. It has the characteristics of cross-departmental, cross-regional and high political specifications, and is deeply involved in the important decision-making agenda of the country, and is the organizational vehicle for the centralized and unified leadership of major work of the Party, constituting an important link of the CPC’s leadership system for major work.The complex of party and government agencies is a composite structure formed by the leading party working organs and integrating government departments in corresponding fields. It realizes the integrated management of the CPC’s work in this field by the CPC’s organs. Based on the management under one roof, co-location and merging, the party and government agencies form a holistic working pattern in the fields of party organization work, propaganda and culture work, united war work and political and legal work under the unified leadership of the party committee, led and coordinated by the party organs, and with each party concerned taking responsibility.The composite structure formed by the CPC’s organizations embedded in non-Party organizations provides a vehicle for the Party to comprehensively lead all national and social undertakings. In the internal governance structure of state-owned enterprises, public hospitals and universities, the party committee plays a leading role. In public institutions and "two new" organizations where administrative leaders are in charge, grass-roots Party organizations play the role of fighting bastions. The CPC’s Leading Party Members’ Group (Party committee in the nature of CLPMG) set up in state organs, enterprises under Chinese management, financial enterprises under Chinese management and other non-party organizations play a leading role.Democratic centralism is the fundamental operating mechanism of the party-government complex structure, and the specific operating mechanisms include the system of power and responsibility distribution, the system of cross-appointment, the system of requesting reports and the system of collective leadership. The party-government complex structure has organizational characteristics such as the wide range of settings, the plurality of organizational forms, the unity of the party-government team in performing its duties according to the law, and the synergy between the party organization and the administrative section, etc. These characteristics are the solid support for maintaining the CPC’s overall leadership and realizing the rule of law of the party leadership, as well as the important guarantee for the transformation of the CPC’s organizational and party leadership advantages into practical effectiveness in the process of the CPC’s governance.