Abstract The P-V phase transition of the FRW (Friedmann-Robertson-Walker) universe with a perfect fluid has recently been investigated. revealing that the four critical exponents near the critical point are consistent with the values predicted by mean field theory. Notably. the coexistence phase of the P-V phase transition in the FRW universe above the critical temperature. https://hollandscountryclothinges.shop/product-category/horse-feed-balancer/