The invention relates to a refuse leachate deamination and dechromisation process method which specifically comprises the following steps: combining heat exchange, dechromisation and deamination complete equipment to perform deamination and dechromisation by adopting a multistage treatment process. With the process method disclosed by the invention, the refuse leachate is subjected to deamination and dechromisation, and the process has the characteristics of high deamination efficiency, excellent dechromisation effect, operating stability and energy conservation.