Climate change has brought many challenges during the last decades facing scenarios under which it occurs, the consequences and victims left and the response by the States and the International communities trying to prevent or mitigate the harm caused by these phenomena. This article which is the product of the research macroproject that is being carried out jointly with the universities belonging to the Legal and Socio-Legal Research Groups and Centers Network, Coffee Triangle Node with the title Environmental Displacement of the population settled in the Coffee Triangle Eco-Region: Incidence of factors associated with effects of climate change, is intended to explain the emergence and meaning of relatively new concepts in the legal and social knowledge, such as displaced people due to environmental causes and their relationship with environmental and climate justice in order to provide general guidelines about the relationship-interaction of these terms and how they directly reflect the issue of access to justice by both, the victims and the means they can use to get it, and the new challenges that environmental law is facing to develop diagnosis on that line and propose academic debate around other disciplines.