Abstract This paper divides organizational cohesion into dimensions, establishes a model of the relationship between party-building work and organizational cohesion, carries out statistics on the overall situation of the party’s work, and also measures the three dimensions of organizational cohesion - emotion, goal, and behavior - respectively, and subdivides the specific dimensions of the influencing factors. Then, the Pearson correlation coefficient was used to explore the strength of the relationship between party education and management work and organizational cohesion sub-correlation and to analyze the differences of party work on the strength of different organizational cohesion from the three factors of gender, political appearance, and grade level of attendance. Finally, organizational resources, number of projects, and organizational autonomy are selected as independent variables, and organizational cohesion is the dependent variable to establish a multiple linear regression model to explore the relationship between each single factor and organizational cohesion. The standardized partial regression coefficients beta of the three variables “organizational size,” “number of projects,” and “organizational autonomy” have larger absolute values, respectively 0.236, −0.096, 0.127, which has a significant relationship with organizational cohesion, in line with the relationship model between party building education and management work and organizational cohesion, strengthening the autonomy management of party building organizations and building the scale of party building organizations can improve the cohesion of party building organizations.