Hi @Qi27467451wuhj, as I see in this conversation, the issue can be one of those, as @Rishabh_Tiwari listed:
"Sorry to hear about the trouble. Your export may not have completed due to one of the following reasons:
1. Your asset was too large. The size limit for exporting assets from XD is 16,000 x 16,000 pixels.
2. You may be exporting to a read-only or a locked directory.
3. One of the assets you may be exporting is under 1 x 1 pixel large, or an invalid object. For example, a path with only one point, or a text object with no text.
If that's not the case, please try exporting to a different location and let us know if that helps or if you need any further assistance.
Regards
Rishabh"
So I'd suggest first checking for those and updating us, maybe some other expert can be helpful if the issue is something else. Hope this helps!