One indicator in the country’s economy is internatonal trade. Likewise ASEAN that has done a lot international trade activities, one of them is Regional Trade Agreement (RTA) with China such as ASEAN-China Free Trade Area (ACFTA). This study aims to investigate determinants of ASEAN-4 export to China and on how ASEAN-4 export is affected after ACFTA is implemented. The study used panel data with common effect estimation method. Results show that, variables of GDP country of origin and country partners both have positive and significant effect on ASEAN-4 export to China. Opennes both country origin and partners have positive and significant effect on ASEAN-4 export to China. Inflation variables of the country of origin and country partners both have insignificant effect on ASEAN-4 export to China. In addition, dummy of variable of a ACFTA has a positive and significant effect on ASEAN-4 export to China