The man was then taken to hospital, where he received counselling.
The photo was first posted on Chinese social media site Weibo and has since been viewed millions of times.
A video of tourists walking across the bridge on another day shows that one section of it has a fake shattering effect when visitors walk over it.
Chinese mountain resorts are increasingly featuring popular glass-bottomed bridges as a way to attract tourists.
According to Earth magazine, published by the Geological Museum of China, at least 60 glass-bottomed bridges had been or were being built across the country as of late 2016.
The city of Zhangjiajie, northwest of China's Hunan province, features a famous glass bridge which hangs an incredible 300m above the ground. The 430m-long, 6m-wide bridge is built between two steep cliffs.
