Abstract: The Hamiltonian operator of two-mode light field interacting with Bose-Einstein condensate (BEC) of two-level atoms is improved in terms of the lattice-liquid model, and the squeezing properties of two-mode squeezed field interacting with Bose-Einstein condensate of two-level atoms are studied. The results show that two quadrature components of light can be squeezed periodically, the maximum depth of squeezing is closely correlated to the initial squeezing parameter of light, and the duration is determined by the frequency of the light field.