Objective To develop an integrated care program centered on promoting participation in exercise and productive activities during the rehabilitation phase after total hip arthroplasty (THA) in elderly patients. Methods A total of 120 elderly patients who underwent THA in Nanyang First People’s Hospital from January 2023 to December 2025 were enrolled. The patients were randomly divided into a control group (receiving the conventional rehabilitation program, n＝60) and an intervention group (receiving the integrated care program, n＝60) using simple randomization. The intervention period for both groups was 3 months. Harris hip score (HHS), psychological status (scores of the Hospital Anxiety and Depression Scale-Anxiety Subscale (HADS-A) and the Hospital Anxiety and Depression Scale-Depression Subscale (HADS-D)), and productive participation scale scores were compared between the two groups at pre-intervention and post-intervention. Results After intervention, the HHS in both groups were significantly higher than their respective pre-intervention levels (all P＜0.05), while the HADS-A and HADS-D scores in both groups were significantly lower than their respective pre-intervention levels (all P＜0.05). The post-intervention HHS in the intervention group was significantly higher than that in the control group (P＜0.05), and the post-intervention HADS-A and HADS-D scores in the intervention group were significantly lower than those in the control group (all P＜0.05). The post-intervention productive participation score in the intervention group was also significantly higher than that in the control group (P＜0.05). Conclusion The integrated care program developed in this study can effectively improve hip-joint function, alleviate anxiety and depression, and boost engagement in instrumental activities of daily living and social-role performance among elderly patients undergoing THA.