Food holds a main role in human beings’ lives and in human civilization in universal across the globe. The food and agriculture division is careful to be a major manager at a worldwide level. The large number and heterogeneity of the stakeholders concerned from different sectors, such as farmers, distributors, retailers, consumers, etc., renders the undeveloped supply chain organization as one of the most composite and demanding tasks. It is the same vast difficulty of the agri products supply chain that limits the growth of global and efficient clearness and traceability solutions. The present paper provides an general idea of the application of block chain technologies for enabling traceability in the agri-food domain. Initially, the paper presents definitions, levels of acceptance, tools and advantages of traceability, accompanied with a brief impression of the functionality and advantages of blockchain technology. It then conducts an widespread literature re-examine on the addition of blockchain into traceability systems. It profits with discussing relevant existing for profit applications, importance the relevant challenges and future prediction of the application of block chain technologies in the agri-food supply chain.