A piezoelectric composite laminate is made of both piezoelectric and composite layers.Piezoelec tric coupling occurs in the constitutive laws in piezoelectric layers.A generalised theory for angle-ply piezo electric composite laminates in cylindrical bending is developed and the corresponding governing equations is built.The displacement and electric potential fields are depicted approximately by the displacement and dec tric potential distribution functions through thickness,respectively.Those functions may be chosen as poly nomial according to the existing simple theories,but the continuity between layers will not be fulfiled.An accurate theory may be built based on refined formulations of those functions,which can fulfil the continui ties of mechanial and electric parameters between layers.The governing equations use only 6 displacement and potential variables,the number of which is independent of the number of layers involved.