Pears contain more sugar, eat at night, especially before bedtime, is not conducive to oral hygiene, may also increase the burden on the stomach and intestines, is not conducive to sleep, is generally not recommended to eat at night. Pear taste sweet, sex is cold, has the role of the production of fluids and dryness, clearing heat and phlegm, laxative effect, generally recommended to eat during the day. Pears are rich in nutrients, such as tannins and other ingredients, the throat has a maintenance role, can play the effect of expectorant cough; contains sugars and vitamins easily absorbed by the body, have to enhance appetite, reduce fatigue, protect the heart and prevent atherosclerosis, protect the liver; also contains a lot of pectin, can play a role in helping digestion, laxative effect. Pear nature of cold, do not eat too much, cold spleen and stomach and lung cold cough eat as little as possible, especially can not eat on an empty stomach, so as not to cause diarrhea, abdominal pain, acid reflux and other symptoms.