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A high contrast 1053nm femtosecond laser pulse with free background is demonstrated based on non-collinear optical-parametric amplification (NOPA).By permuting the signal and idler in two stages of NOPAs,48.2fs,62μJ laser pulse at 1053nm with contrast ratio of 2.3 × 10-11 is obtained within the time scale of sub-5ps.The beam quality factors M2 for tangential and sagittal directions are 1.59 and 1.30,respectively.This work not only proves a feasible way to generate a clean femtosecond laser pulse but can also be employed as an ideal frontend for ultrashort ultrahigh intensity Nd:glass-based laser systems.