In fact, the phenomenon of slums in Egypt considers one of the most important challenges and wars Egypt has come through in the last few decades. Despite the difficulty of finding out an appropriate funding for getting rid of all slum areas, particularly, those are representing a critical risk on the their residents, the government has finally found out a way for appropriate funding. Likely, this dream of mot the political leaderships for years has become true. This study drives at achieving the principle of social justice on which the Revolution of 25 January, 2011 has been based upon through developing slums in Egypt and provide residents a good acceptable human life for all citizens , particularly, those residents of Qalubia governorate, the study area. The study hypotheses indicates a significant correlation between activation of environment's regulations  and foreign donations for developing slums in Qalubia governorate through activation of partnership between the donating states  and the authority in charge represented in the Public Office of Qalubia governorate, the civil society institutions and the private sector. The study has used the descriptive-analytical method for formulating the theoretical framework of study . Data are collected through two investigation forms as the study main tools, one is directed to audience; while the other is directed to employees in Slums Development Units  in Qalubia governorate. The sample consists of (18) workers in these Slums Development Units. The results indicate significant statistically correlation at (0.05) significance level between   environmental legislations and slums' development. There is also a significant impact of environmental regulations on promotion of slums by 5.3%. There is a statistically significant relationship at (0.05) significance level, as the environmental regulations affect the development of slum areas by (10.7%). The researchers recommend the importance of activating environmental legislations for developing slums in Qalubia governorate. The researchers have also recommended the necessity to ask for more foreign donations for the critical benefits these foreign aids have provided in developing slums in Qalubia governorate.