LucyMO said:no, you do not need DS-2019 when you are leaving the US. BUt for the future (you never know when you are going to need it -- I needed my DS-2019 10 years after my exchange program), I would advise you to get a copy of your DS-2019 from your sponsor anyway. Especially, if you are just briefly travelling to China and are coming back to the US for the same program. You will need your DS-2019 if you plan to reenter US for the same program.