An improvement was brought forward on algebraic reconstruction technique(ART),here,named simple self-correlative algebraic reconstruction technique(SSART).With numerical simulations,a model was reconstructed by basic ART,simultaneous ART(SART),modified SART(MSART).SSART was simulated at the same time.Simulated results and reconstructive accuracy of all kinds of ARTs mentioned above were contrastively discussed on mean-square error (MSE),absolute value error(AVE),and peak error(PE).As a result,the reconstructive accuracy is improved much by SSART.The MSE of SSART is decreased about 78.2% which is smaller than that of ART at the level of 10~(-4) magnitude,and PE is decreased 92.9% at the level of 10~(-2) magnitude.SSART is considered as a very superior reconstruction technique that has many good virtues such as simple iteration program,high reconstructive accuracy,high stability,and strong self-reconvering ability.