The faculty of Nursing, Chiang Mai University organized an online international training on "Collaborative and Development of Health System: How to Strengthen the Capacity of Public Health Personnel during the COVID-19 Pandemic." The week-long training took place between June 29 - July 3, 2020, via Zoom and was supported by the Thailand International Cooperation Agency (TICA). The training course had 150 participants registered from 39 countries. Participants will learned about: health care systems and policies, basic knowledge related to collaboration within and development of health systems, updates on the COVID-19 situation, guidelines, and recommendations, the roles and functions of public health personnel in providing health services in the community during COVID-19 and recommendations and strategies/approaches for providing health services through community health personnel during COVID-19 pandemic.