Huo, 30, who is a lab administrator in Guangxi Zhuang Autonomous Region jumped at a female student, fully naked, on campus yesterday and harassed her, Shanghai Daily quoted a provincial official as saying.
She was rescued after some teachers intervened, the paper reported.
The girl was not injured in the incident.
The school said Huo was diagnosed of periodic mental disorders in 2011.
During his treatment, doctors said he could be considered mentally stable if the symptoms did not reappear in the following two years.
Police have launched a probe after the man was sent to hospital by his relatives following the attack, the report said.