Purpose/Significance To discuss the development prospect of combined application of wearable device and internet hospital. Method/Process The paper systematically summarizes the external environment information of combined application of wearable device and internet hospital in China by PEST analysis. Result/Conclusion The policy environment, potential market development opportunities, current social health situation and information technological level create favorable conditions for the combined application of wearable device and internet hospital, however, the scattered management system and constraints of traditional concept also pose challenges to their effective combination. The combined application of wearable device and internet hospital needs to optimize the profit model on the basis of ensuring product quality and improving information security management.