examined the effect of joint audit and auditor Rotation on the firm‟s value in Egypt. To gathering data he used a model of 34 companies in 14 sectors in the Egyptian stock market and the data are annual time series from 2005 to 2009. The audit rotation and the Leverage have a significance effect of the firm value. Also there is no significance effect of applying the joint auditing on increasing the value of a firm. Also there is a significance effect of applying the auditing rotation on increasing the value of a firm. The statistical analysis showed that the factor companies have a significance effect of the value a firm, while the time has no significance effect on the dependent variable. This means that the value of a firm can differ from company to another. At the end of this analysis it is recommended to apply audit rotation to increase the value of a firm and increase auditor independence level.