Abstract: The method getting the specific form of EPR-type entangled state of continuous variable in Fock representation is proposed. The specific form of bipartite EPR entangled state in Fock representation is derived by using the properties of normally ordered product （NOP） and operating the function of boson operators in the form of NOP. Furthermore,the method is applied to getting the specific form of multi-partite EPR entangled state in Fock representation. So,it is a general method.

Key words: EPR entangled state of continuous variable, normally ordered product, Fock representation