The new coronavirus vaccine may still be effective when given 70 days apart, and it is generally not necessary to start over with the new coronavirus vaccine, but it is necessary to make up for the missed doses as soon as possible, and the overall immunization effect may not be as good as that of the normal cycle. The new crown vaccine, when injected into the body, causes specific immunity against the new coronavirus and can cause the body to produce a certain amount of specific antibodies. If only one injection is given, the immune effect is weak and short-lived, and the number of antibodies in the body will continue to decline. Usually the first injection is followed by a second one within 8 weeks to help the body produce a large number of antibodies again and consolidate the specific immune system against the new coronavirus. When the New Crown vaccine is given again 70 days apart, the number of antibodies is less than within 8 weeks and the immune effect is not as good, but it is still effective. After the New Coronavirus vaccination, you should pay attention to a light diet, and it is not recommended to drink alcohol or eat spicy and stimulating foods, and not to eat foods that are easily allergic. After the injection, you should pay attention to rest and the wound is not recommended to touch water, etc. to avoid infection. Common adverse phenomena such as wound reddening and swelling may occur after injection, so do not worry excessively. In case of serious adverse reactions such as high fever and severe allergy, you should go to the hospital for treatment in time.