Play the CDC health education video to let staff understand the importance of hand hygiene. Proper hand washing can prevent infection in the institution and block the interactive transmission of the virus in the institution. The video explains that it takes an average of 40-60 seconds to wash your hands each time. The formula is inside (rubbing the palms)、Outside (rubbing the back of the hand and the back of the fingers alternately with both hands)、Clamp (rubbing between fingers)、bow (Two fingers hold each other, rotate and rub the back of the finger and the palm)、da(Alternately rotate and rub the thumb and tiger's mouth with both hands)、Standing (Two hands alternately rubbing with fingertips on palms)、Finished (rinse with clean water)，Finally, dry it with a paper towel.