The invention provides a herpes virus EBV (Epstein-Barr Virus) detection kit. The kit comprises a nucleic acid releasing agent and PCR (polymerase chain reaction) reaction solution, wherein the nucleic acid releasing agent comprises 0.01-0.5 mM/L of surfactin, 20-300 mM/L of potassium chloride, 0.01-2% of sodium dodecyl sulphate and 0.05-1% of ethanol; and the PCR reaction solution comprises an upstream primer and a downstream primer used for target polynucleotide amplification, and a probe used for target polynucleotide detection. The detection result of the method for releasing nucleic acid by the nucleic acid releasing agent in the kit disclosed by the invention has no obvious difference with the detection result of a boiling method, a strong protein denaturing agent is used during nucleic acid extraction in the kit disclosed by the invention for rapidly breaking the coat protein structure of a pathogen and releasing the nucleic acid of the pathogen, and release and extraction for DNA (deoxyribonucleic acid) can be rapidly finished without heating; the sensitivity of the EBV detection of the kit disclosed by the invention can achieve 400 copies/ml, and the quantitative linear range is 400-4.00E+09 copies/ml; by applying the kit, rapid and accurate detection can be performed on EBV-DNA in the unknown samples of blood plasma, throat swab, peripheral blood and the like, and reliable experimental basis is provided for diagnosing EBV infection.