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Because the Grating measuring data isolation pressure transmitter [1] occur temperature drift and zero drift due to temperaturechange,This paper presents a genetic [2] (GA) algorithm and support vector machine (SVM) method of [3]algorithm combined with the output data of pressure transmitter for compensating treatment,It get the parameters C andδ² with the SVM though genetic method optimize,Then get the model of the SVM function fitting;Through the analysis of Engineering experiments,nonlinear target function approximation ability and other aspects significantly,It has much utility between Temperature compensation of pressure sensor.