Saliva preservation solution, preparation method and uses thereof

The present invention discloses a saliva preservation solution, a preparation method and uses thereof, wherein the saliva preservation solution comprises 0.1-2 mol/L of lithium chloride, 1-50 mmol/L of Tris-HCl, 0.1-2 mol/L of urea, 0.1-2% (w/v) of SDS, 1-10 mmol/L of EDTA, and 10-90% (v/v) of ethanol, and the pH value of the system is 7-10. The saliva preservation solution of the present invention is used for preserving saliva, can maintain the integrity of DNA in cells for a long time, and can prevent bacteria and other microorganisms from breeding.