To investigate the impact of plume flow on the indirect force measurement of baffles, numerical simulations were executed on the force on baffles in the presence of plume flow. Structural parameters including baffle size, position, and force distribution were scrutinized. Findings indicated that optimal baffle performance occurred when the distance between the baffle and nozzle outlet was approximately 1.5 times the outlet diameter, and the baffle diameter was around 2.5 times the outlet diameter, resulting in the maximum impact force with minimal influence from the baffle. On the basis of numerical simulations, an optimal experimental device design parameters for the plume baffle were selected, and an indirect measurement device was constructed. The direct force measurement and indirect force measurement results of the baffle were obtained under different operating conditions through experiments. The indirect thrust correction formula for the plume baffle was obtained through linear fitting. The research results could provide reference for the design of similar indirect force measurement devices for baffle.