BACKGROUND: Integrated care services have been initiated in China for several years, yet there remains a dearth of substantial evidence and research elucidating the service's efficacy, particularly in underdeveloped areas. This study aims to address this gap by evaluating the effectiveness of integrated care from the patients' perspective, thereby offering practical strategies to improve service effectiveness and promote health equity within county medical alliances. METHODS: The Patient Perceptions of Integrated Care (PPIC) and European Quality of Life-5 Dimensions-5 Levels (EQ-5D-5 L) scales were employed to gather information on patients' perceptions of integrated care and their self-rated health status. A total of 1093 respondents from two pilot areas were selected for data collection. T-tests and one-way analysis of variance (ANOVA) were recruited, additionally, the study utilized multiple linear regression models to examine the specific impact of various factors on the effectiveness of integrated care services. RESULTS: The average score for the effectiveness of integrated healthcare services from the patients' perspective was 67.72 (SD = 14.443, n = 1093). Statistical analysis revealed that as the respondents' age increased and their self-rated health declined, the PPIC scores showed an upward trend. Regression analysis found that factors such as age, education level, income, health status, and level of healthcare intervention significantly influenced PPIC scores. Overall, there is a trend where respondents with higher health needs tend to have higher perceptions of the service, while those with relatively higher socioeconomic status are more likely to provide lower ratings. Additionally, increasing the frequency and duration of healthcare interventions can improve respondents' evaluations of the services. CONCLUSIONS: This study analyzes the effectiveness of integrated services in China's county-level medical alliance from the patients' perspective. It finds progress in resource integration and efficiency but identifies limitations in implementation, particularly in balancing equity. Socio-economic factors continue to affect the fairness of service utilization and patient satisfaction. Constraints in finance, human capital, and technology hinder the provision of more targeted services for vulnerable groups. To promote health equity, future services need to focus more on key populations and provide more targeted services, accelerate the integration of information technology, and expand service coverage to address the diverse needs of marginalized communities.