Summary: It is well known that multiwavelets can possess all the desirable properties important in signal processing and image processing, such as orthogonality, short support, symmetry and high order of vanishing moment, all of which traditional scalar wavelets cannot have at the same time. In this paper, based on the lattice structure for casual FIR losses systems, we present the explicit parametrization of one type of symmetric multifilter banks which can generate balanced multiwavelets, and construct some balanced multiwavelets of certain order by using this parametrization.