For a child born in China with dual U.S. and China nationality, there are various options for documents allowing departure from China. The trick is that you need to show the immigration inspector in the airport both a travel document issued by the Chinese government and a visa or other document to enter your next destination.
The first option is to apply for a PRC Exit and Entry Permit to leave and (optionally) return to China within 60 days. Show the inspector that permit and your U.S. passport if that’s where you’re headed. The permit is issued based on the rationale that there is a “nationality conflict” preventing issuance of a PRC passport to a person who holds a foreign passport.
The second option is to depart China with a PRC passport to a third country or region for which you have a visa or where no visa is required. From there, you can enter the U.S. with your U.S. passport.
A third option is to apply for a U.S. “pro forma” visa to be stamped into your PRC passport. That visa in a PRC passport is sufficient to show the China immigration inspector that you are authorized to enter your destination country. Here’s what the U.S. Consulate in Shenyang says about the pro forma visa:
–Source: U.S. Consulate in Shenyang (Jan. 2018 Newsletter)
Is a pro forma visa the right option for you? Let me know in the comments.