Objective To identify the core symptoms and bridge symptoms within the psychosomatic symptom network of patients with atrial fibrillation（AF）, providing a basis for developing precise and effective symptom management strategies. Methods A total of 288 patients with AF were selected by convenience sampling. The Atrial Fibrillation Patient Physical Symptoms Questionnaire, the Chinese version of the Generalized Anxiety Disorder Scale-2 (GAD-2), and the Chinese version of the Patient Health Questionnaire-2 (PHQ-2) were used to assess the psychosomatic symptoms of AF patients. R software was used to build a contemporaneous psychosomatic symptom network. Results The most common and severe symptom among these patients was palpitations (87.5%). Among patients with positive symptoms, the most severe symptom was irregular heartbeats. Centrality indicators showed that the symptom with the highest strength centrality was exercise intolerance (rs=1.267), followed by weakness (rs=1.254), little interest or pleasure in doing things (rs=1.078), shortness of breath (rs=0.879), and tiredness (rs=0.846). The symptoms with the highest bridge strength centrality were poor appetite (rbs=0.393), tiredness (rbs=0.391), trouble concentrating (rbs=0.379), headache (rbs=0.376), and weakness (rbs=0.367). The correlation stability coefficients for the centrality indicators were all greater than 0.5. Conclusion Weakness and tiredness are both core and bridge symptoms in AF patients. Exercise intolerance, little interest or pleasure in doing things are core symptoms, while poor appetite, trouble concentrating, and headache are bridge symptoms. Healthcare providers can develop targeted intervention strategies based on these core and bridge symptoms identified in the network, improving the management of psychosomatic symptoms in AF patients.