Party building in a bank is simpler than that in a company. Party building in banks refers to the role of bank party organizations in banking business. By strengthening party leadership, party building is promoted, employees' ideological and political quality and professional ability are improved, and the development and growth of banking business are promoted. It involves two aspects: banking business and party building, and the work intensity and difficulty are small. Corporate business refers to various financial services provided by banks for corporate customers, including loans, deposits and settlement. The complexity of corporate business lies in that it involves the interest relationship between banks and enterprises, and it is necessary to balance the interest relationship between banks and enterprises, not only to meet the financial needs of enterprises, but also to ensure the safety of enterprises' funds. On the whole, party building in banks is simpler than that in companies.