This article is part of an ongoing research called "Violation of the human right to health against people with mental or psychosocial disability in situation of risk" to obtain a master in law degree. it aims to exposeexisting problems in Ensenada, Baja California, Mexico, regarding the abandonment by mexican state health authorities toward homeless people with mental or psychosocial disabilities, thus violating their human rightto access health services. it is as regrettable as it is true that homeless people who suffer from mental disabilites are one of the most unprotected groups in Mexico. due to their characteristics, they are extremely vulnerable to their entireenvironment and they lack the capacity to assert their fundamental human rights, which is why they are exposed to a wide range of violations of these rights. this problem must be addressed in observance of the human rights protected by the political constitution of the united states of Mexico, international treaties of which it is a party, and by competent national legislations in matter of mental health, in order to motivate mexican authorities within the scope of their competences, since they seem indifferent in the face of these problems.