Chinese state media said the incident had taken place in a "scenic spot" in Henan Province at. on Sunday afternoon.
Shocking videos of the incident were widely shared on Chinese social media showing a large colorful, inflatable playhouse that was picked up and brought high into the air as dust swirled through the area.
Another child was seriously injured and at least 17 children and two adults with minor injuries.
Dust demos are created when hot air rises rapidly through cooler air, causing a funnel-like vortex. They are most likely to occur in flat areas, in warm environments and when there is light or no wind. 659002] Zhang said the dust devil had a 10 meter diameter (32 feet) and lasted for just three to four minutes.