Gummosis disease is a semi-serious and non-infective disease that affects Amygdalus communis. The disease grade was studied on different cultivars, cultivating areas, age branches and rootstocks based on the disease index and the absolute influx of the diseased plants from June to August. And the occurred regularity of gummosis disease in Amygdalus communis and the disease resistance properties of different cultivars were discovered. The only effective method of preventing gummosis disease in Amygdalus communis is painting a CaO and S fluid mixture onto the plants five to six times from June t...