New coronavirus mainly through droplet transmission and contact transmission, air circulation, high density of personnel in the area are high-risk areas, office areas should pay special attention to: 1, elevators: air circulation and frequent movement of people, elevator buttons frequently touch the risk of contact infection; 2, cafeteria: high density of personnel, the need to take off the mask when dining, prone to droplet infection; 3, office: office area crowd gathering, prone to infection. Easy to occur infection. Protection suggestions are as follows: 1. Be sure to wear a mask when riding in the elevator, and when touching the buttons, use paper towels or disinfectant wipes to separate them; 2. Stagger meals and avoid talking during meals; 3.