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We investigate Non-Hermitian quantum field theoretic model with $\iotag\phi^3$ interaction in 6 dimension. Such a model is PT-symmetric for thepseudo scalar field $\phi$. We analytically calculate the 2-loop $\beta$function and analyse the system using renormalization group technique. Behaviorof the system is studied near the different fixed points. Unlike $g\phi^3$theory in 6 dimension $\iota g\phi^3$ theory develops a new non trivial fixedpoint which is energetically stable.

2-Loop $\beta$ Function for Non-Hermitian PT Symmetric $\iota g\phi^3$ Theory