Parents who have lost their only child and cannot or do not wish to adopt or have another child are labeled Shidu parents. Network analysis is used to examine symptom-level interactions in mental disorders. This study aimed to investigate the comorbidity network structure of prolonged grief disorder (PGD) and anxiety symptoms among Shidu parents and compare network differences between child loss from natural and unnatural causes. Key findings revealed that faintness, feeling afraid, panic, and meaninglessness are central symptoms, while meaninglessness, inability to trust others, and nightmares are bridge symptoms. The strongest connection in the PGD-anxiety network is between avoidance and shock, and the edge between meaninglessness and weakness strongly links the two communities. Shidu parents who experience unnatural loss have a stronger edge between inability to trust others and bitterness/anger. Highlighting these symptoms may help interventions address the comorbidities associated with PGD and anxiety among Shidu parents.