[Problem] To provide an acidic gas separation laminate and acidic gas separation module which are capable of suppressing flaw occurrence. [Solution] An acidic gas separation laminate (1) is equipped with: a composite film (10) comprising a porous support body (4) obtained by layering a porous film (2) and an auxiliary support film (3), and an acidic gas separation facilitated transport membrane (5) positioned on the porous film (2) side of the porous support body (4); and a permeable gas channel member (6) which is layered so as to face the auxiliary support film (3) of the porous support body (4), and through which an acidic gas (22) which has passed through the acidic gas separation facilitated transport membrane (5) flows. The acidic gas separation laminate (1) is further provided with a film protection section (9) in which the porous film (2) is impregnated with an adhesive (8) at an impregnation rate of 10% or higher in the layering direction of the porous support body (4), and the adhesive (8) impregnation rate in the auxiliary support film (3) is lower than that in the porous film.