  We analyse dark matter in most general form of effective field theory
approach. To examine the interactions between weakly interacting massive
particles(WIMPs) and Standard Model (SM) particles, we use the six-dimensional
EFT mediated by new physics scale $\Lambda$ at tree level. After implementing a
new effective field theory model in FeynRules \cite{Feynrules} We investigate
the theory and constrain the theory by using relic density generated by
MadDM\cite{Maddm} tool of MadGraph5\_aMC@NLO \cite{mg5}.
