Buying things online may transmit novel coronaviruses when receiving a courier. The survival time of the new coronavirus is mainly based on the temperature and humidity in the air to decide, express after a long time of transportation, the new coronavirus mostly die in transit, but if the air temperature is low in the transportation process, and the humidity is large, such as the cold chain transportation, the virus may still exist on the surface of the express. When picking up the courier, do not face to face with the staff of the courier delivery, urge the courier staff to place the courier in the doorway, ventilation, pick up the courier wearing a mask, hands can also wear gloves, local use of alcohol spray, the role of the 5 minutes after the demolition of the courier. When purchasing food by courier, it is recommended that the surface of the food be rinsed with flowing water for about 15 seconds or more, and the virus, if present on the surface of the food, can be washed away with flowing water. Also, make sure the food is cooked before consumption. For more information about whether the new coronavirus is contagious when you buy something online and pick it up by courier, you can consult the staff at the CDC.