The invention discloses a correction method of machining parameters of a numerical control grinding machine tool considering space geometric errors, and relates to the field of mechanical processing and manufacturing. The method comprises the following steps of: S1, determining geometric design parameters of a to-be-machined tooth surface and initial grinding processing parameters; S2, accuratelymeasuring SGEs of a machine tool and compensation; S3, presetting the tooth surface ease-off; S4, solve the total counter adjustment quantity through a numerical algorithm; and S5, determining the counter adjustment quantity considering SGEs and the accurate machining parameters considering SGEs. According to the correction method of machining parameters of the numerical control grinding machine tool considering space geometric error, a corresponding parameter driving processing scheme is proposed, basic theories and methods are provided for shape and property cooperative manufacturing parameter driving decisions, and the products prepared by the machining parameters determined through the scheme are precise in size.