To solve the problems of low flexibility of fiber grating preparation,and not conducive to the realization of distributed wavelength division multiplexing in measurement,an eccentric fiber Bragg grating (EFBG) sensor based on point-by-point method was proposed.Using the technology of point-by-point method with femtosecond laser (FSL),the grating writing position is vertical deviation from the center by 3 μm,the length of the grating is 5 mm,the center wavelength of the grating is 1 633 nm.Different from traditional fiber Bragg grating (FBG),the eccentric structure of the grating can excite a wider range of cladding mode resonance.By analyzing the wavelength drift of the cladding mode resonance peak,the applied strain or temperature can be characterized.The experimental results show that in the strain measurement range of 0—500 με,the sensitivity of cladding mode is 0.98 pm/με,and in the temperature measurement range of 30—80 ℃,the sensitivity of cladding mode is 10.89 pm/℃.Besides,the difference between cladding mode sensitivity and core mode sensitivity is small,so the sensor measurement of strain or temperature can be realized.