As the capital of Mexico, Mexico City brings together more than 45% of the country's population. At the moment, this city is operating at an overload. Refugees have extremely poor living conditions and lack privacy. the basic living needs of local refugees cannot be guaranteed. Because they cannot obtain a clean and sanitary living environment and domestic water, the mortality rate is high. In addition, there are frequent violence and disputes exit, especially in the area where refugees live, and life is chaotic.