The process of detoxification of dogs suffering from diarrhea is generally in the early stage three days before the onset of the disease, and the middle and late stages on the fourth and fifth days. The condition will suddenly worsen and diarrhea will occur. If the dog can persevere, It will start to get better on the sixth day, so once it is found that the dog has parvovirus, it is best to treat it in time, so that the hope of cure is relatively high. During the treatment period, infusion should also be given to supplement nutrition to prevent the dog from dehydration.