In this experiment, liquid of soap at three dosages (3, 5 and 7 ml/L) and Abamectin (12.5 ml/100L) has been used with releas of the mite predator, Phytoseiulus persimilis for controlling the two-spotted spider mite, Tetranychus urticae on bean plants under laboratory conditions. Contact toxicity of soap liquid and Abamectin were evaluated and classified according to IOBC. Efficacy of soap liquid at 3 and 5 ml/L was not sufficient to repress spider mite populations while the using of soap liquid at three concentration with predatory mite showed supporter effect and provide satisfactory control whereas soap liquid determined to be slightly harmful- moderately to P. persimilis. Abamectin with predatory mite or if used only gave sufficient control to spider mite population but without supporter effect between Abamectin and predatory mite whereas Abamectin determined to be harmful to P. persimilis. However, using soap at suitable dosage, with or without predatory mite, gave encouraging results for controlling spider mites. Generally, using of soap showed adaptation with predatory mite and proved supporter effect for controlling the spider mites. In despite of, soap showed no phytotoxicity to host plants but needs to be tested in greenhouse and field conditions before application.