Objective To investigate the problems of cleaners and their managers,and put forward targeted rectification measures through questionnaire survey on the hazard cognition and related knowledge of needle stick injuries of cleaners in hospitals. Methods On-site questionnaire survey was used to investigate a total of 304 ward cleaners in our hospital. Among them,82 were male cleaners (27.0%) and 222 were female cleaners (73.0%). 62 people (20.4%) were trained in acupuncture protection before taking up work,and 242 people (79.6%) were not trained. There was statistically significant P<0.05. Results The survey showed that a total of 174 cleaning staffs had acupuncture injuries (57.2%)); 107 people (35.2%) were not reported after acupuncture injuries. For lack of knowledge and self-protection awareness,of which 101 people (33.2%) were not aware of the dangers of acupuncture injuries; There were 81 people (26.6%) didn't wear gloves when handling sharps trash;and 220 people (72.4%) had incorrect timing of sharps boxes; 91 people (29.9%) did not know how to handle after a needle stick injury. Male cleaners had a lower awareness of needle stick injuries than female.There were 30 male cleaners (36.6%) and 51 females (23.0%) who did not wear gloves when handling sharps. 41 men (50.0%) and 60 women (27.0%) were not aware of the harmfulness of needle stick injuries. Those difference between the two groups was statistically significant (P<0.05). Conclusion The risk of needle stick injuries is high for hospital cleaners in the treatment of medical waste. It is very necessary to take acupuncture injuries for the cleaning staffs before they take up their posts,but the pre-job training cannot completely keep the cleaning staffs' awareness and prevention awareness of acupuncture injuries for a long-term. Hospitals should strengthen the dynamic training and supervision of cleaning staff,especially for male cleaners. Managers need to constantly try use new management methods to establish process-type thinking and working methods in their minds. In daily work,they continuously strengthen the cleaning consciousness of needle stick injuries and reduce the incidence of needle stick injuries,thereby protecting the physical and mind health of the cleaning workers.