The invention discloses a preparation method of a frozen 
diluent of sheep 
semen and an application of the preparation method. The preparation method of the frozen 
diluent of the sheep 
semen comprisesthe following steps: firstly, accurately weighing 
tris(
hydroxymethyl) aminoethane, dihydrate 
trisodium citrate, 
fructose, an 
inositol compound, ethanediol or glycerinum, and 
oxytocin, adding the materials into 
ultrapure water, dissolving, adding a fresh 
yolk centrifuged liquid supernatant, 
penicillin and 
streptomycin, mixing evenly, fixing the volume after adjusting the pH value to 6.8-7.2, thus obtaining the frozen 
diluent of the sheep 
semen. The 
inositol compound is used to replace an 
antifreeze protein, the defect of the application of the 
antifreeze protein is avoided, meanwhile, the 
oxytocin is added when the semen is conveyed, and the 
sperm vitality and the acrosomal integrity are improved, so that the 
fertility rate is increased.