正式群体主要指在学校老师指导下正式组织起来的班、组或团队组织。非正式群体主要是指由于兴趣、爱好、思想观念相同等原因而自发地经常在一起活动的这种无形的组织,又叫小团体。非正式群体可分为志趣型、进步型、颓废型、怜悯型、敌对型。学生非正式群体的最主要功能是满足学生社会的、心理的和生活的需要,弥补正式群体的不足,它存在于正式群体之中,对正式群体产生一定的作用。健康的非正式群体与正式群体的目标一致,它们之间没有根本的利害冲突,且能 Formal groups mainly refer to the formally organized classes, groups or team organizations under the guidance of school teachers. Informal groups mainly refers to such invisible organizations, often called small groups, that spontaneously and often act together due to their interests, hobbies and ideological concepts. Informal groups can be divided into fun-based, progressive, decadent, sympathetic, hostile. The most important function of the informal group of students is to meet the social, psychological and life needs of students, to make up for the lack of formal groups. It exists in formal groups and plays a role in formal groups. Healthy informal groups are in line with the goals of the formal community with no fundamental conflict of interest between them and can