The entanglement in the system which consists of two-mode squeezed vacuum state and BoseEinstein condensate in two-photon process is investigated. The entanglement of field-atom and the entanglement between the two-mode field are investigated using the quantum reduced entropy and quantum relative entropy,respectively. The influences of the initial squeezed parameter of field and the interaction between atoms on the evolution of the entanglement of field-atom and one of two modes of field are discussed.