民主革命时期,党的建设面临着极其复杂的情况,既有根据地能够公开的党组织建设,也有处于地下状态的敌占区(土地革命时期、解放战争时期被国民党控制的地区分别称白区和国统区,抗日战争时期我国被日本帝国主义侵占的地区称敌占区)党组织建设,在两种斗争环境中的党组织相互配合,很好地发挥了领导作用,成为党夺取新民主主义革命胜利的重要法宝,同时两者在进行党的建设中都积累了丰富的经验,为党的建设提供了宝贵财富。陈云同志是党的第一 During the period of the Democratic Revolution, the party’s construction faced an extremely complex situation. Both the open party organization and the enemy-occupied area under the underground state during the period of the Agrarian Revolutionary War and the area under the control of the Kuomintang during the War of Liberation were respectively referred to as " The area under the KMT control system and the area occupied by Japanese imperialism in the period of the Anti-Japanese War, the enemy occupied areas. Party building and cooperation among the party organizations in the two kinds of struggle environments played a very good leadership role and became the party’s victory in the new-democratic revolution . At the same time, both have accumulated rich experience in party building and have provided valuable assets for the party building. Comrade Chen Yun is the party’s number one