The invention discloses a method of treating salt damage of shallow root crops by utilization of a hornet's nest and alcohol fermentation liquid so as to improve and treat salinity soil or matrix before the shallow root crops are sowed or transplanted by utilization of a hornet's nest particle modifier; and the hornet's nest particle modifier is prepared by the hornet's nest and alcohol fermentation liquid. Researches show that the method is suitable for salt damage and heavy metal mild pollution treatment of the shallow root crops such as sugarcanes, vegetables and fruit tree nursery stocks in nursery stage, the soil or matrix salination can be effectively treated, salt damage symptoms of the shallow root crops can be largely reduced, root growth and nutrient absorption of the crops can be promoted, yield and quality of the crops can be improved, and heavy metal damage symptoms of the crops can also be reduced. In addition, the hornet's nest and the alcohol fermentation liquid, which are raw materials of the method, are organic waste, and the raw materials are cheap and convenient and can be processed simply.