We present a bilayer structure of hybrid fiber sensing network based o n fiber Bragg grating (FBG) and optical frequency domain reflectometry (OFDR),which consists of a discrete sens ing layer and a distributed sensing layer.In discrete sensing layer,temperature is measured by FBG.In th e distributed sensing layer, distributed strain is demodulated from the information of Rayleigh-scattering in the fiber by OFDR.The whole network using one tunable laser source with wide optical spectrum could achieve the cooperative work between the discrete sensing layer and the distributed sensing layer.The sensing networ k can accurately measure strain and temperature,in which the strain sensitivity is 0.75με and the temperature sensitivity is ±1℃.This sensing network by proposed method provides a good exploration for a sensing network wit h large capacity,multiple parameters,high spatial resolution and high measureme nt accuracy.