Objective To understand the sources and responses to the negative emotions in nursing students during their CCU internship,in order to improve the nursing clinical teaching.Methods This qualitative study investigated 1 2 nursing students who practiced in coronary care unit from February to June 201 5.The data were collected from the depth interview and concluded to several key themes.Results The experiences of negative emotions were common in nursing students including dysphoria,resistance,depression, fearand tension.The sources could reduce to several themes including:the insufficient psychological adjustment ability,lack of trust,basic nursing workload,high-stress working environments and lack of specialized knowledge.To confront the these kind of negative emotion,most nursing students actively coped with and desired to be concerned at the same time.Conclusions The clinical practice ability should be paid attention to, as well as nursing student′s emotion experience,probing into nursing students′psychological state and pressure source.The school and departments should provide psychological guide,take corresponding measures to promote physical and mental health,find out new teaching model,in order to improve clinical practice effects.