In electronic speckle pattern interferometry (ESPI), the saw-tooth phase map obtained by the phase-shifting technique is inherently full of speckle noise. Noise reduction must be carried out to suppress the high-level noise before it is unwrapped. In accordance with the feature of the saw-tooth phase maps, an adaptive filter is developed combining the classical sine/cosine filter and the fringe orientation information of the saw-tooth phase map. Fringe orientation map is firstly generated from the saw-tooth phase map, and then the fringe-contoured-window is derived accordingly. Finally, the filtering is carried out within the window. Comparing with existed filters, it has a better performance on phase jump information preservation and does not have any blurring effect on the phase distribution providing the filtering is implemented on the equal-phase window. Moreover, its capability of noise reduction is more powerful. The effectiveness and advantages of the novel filter have been verified by both simulated and real saw-tooth phase maps.