We compute the quantum information metrics of a thermal CFT on [Formula: see text] perturbed by the scalar primary operators of conformal dimensions [Formula: see text] = 3, 4, 5, 6. In particular, we assume that the Hamiltonians of the mixed states commute with each other and the temperature is fixed. Under these conditions, the evaluation is analogous to the pure state case. Then we apply the method of A. Trivella [Class. Quantum Grav. 34, 105003 (2017)] to calculate the mixed state information metric for the scalar primary operator of conformal dimension [Formula: see text] = 4 holographically, and reproduce exactly the result in the CFT2 by our approach.