In order to enrich the cultural life of employees, adjust the pressure at work and improve their safety awareness, the labor union of the company and the safety and quality department jointly held a riddle activity on safety knowledge on the afternoon of August 4, 2015. Everyone actively participated in the activity. The atmosphere at the activity site was active, which not only alleviated the tense working atmosphere at ordinary times, but also expanded the safety knowledge of employees, It was a joy to see everyone get small prizes after guessing the riddle.