A vehicle air conditioner mounted on a vehicle, comprising: a thermal environment detector configured to detect a thermal environment around an occupant in a cabin; a thermal environment control device configured to control the thermal environment around the occupant; the vehicle air conditioner being characterized in that it further comprises: an RRI (R-R Interval) detector configured to detect an RRI from a pulse wave of the occupant; a comfort sensation calculator configured to quantitatively calculate comfort sensation of the occupant from the RRI detected by the RRI detector, and output a signal indicating the comfort sensation of the occupant; a target control value setter configured to set a target control value of the thermal environment control device, based on the signal output from the comfort sensation calculator, which indicates the comfort sensation of the occupant; and an occupant thermal sensation calculator configured to obtain a thermal model of the occupant based on thermal sensation calculation information containing the thermal environment around the occupant which is detected by the thermal environment detector and an operation state of the thermal environment control device, quantitatively calculate thermal sensation of the occupant, and output a signal indicating the calculated thermal sensation, wherein the target control value setter is configured to determine whether the signal from the comfort sensation calculator and the signal from the occupant thermal sensation calculator correspond to each other, and execute a process of correction for the signal output from the comfort sensation calculator, when both of the signals do not correspond to each other. a thermal environment detector configured to detect a thermal environment around an occupant in a cabin; a thermal environment control device configured to control the thermal environment around the occupant; the vehicle air conditioner being characterized in that it further comprises: an RRI (R-R Interval) detector configured to detect an RRI from a pulse wave of the occupant; a comfort sensation calculator configured to quantitatively calculate comfort sensation of the occupant from the RRI detected by the RRI detector, and output a signal indicating the comfort sensation of the occupant; a target control value setter configured to set a target control value of the thermal environment control device, based on the signal output from the comfort sensation calculator, which indicates the comfort sensation of the occupant; and an occupant thermal sensation calculator configured to obtain a thermal model of the occupant based on thermal sensation calculation information containing the thermal environment around the occupant which is detected by the thermal environment detector and an operation state of the thermal environment control device, quantitatively calculate thermal sensation of the occupant, and output a signal indicating the calculated thermal sensation, wherein the target control value setter is configured to determine whether the signal from the comfort sensation calculator and the signal from the occupant thermal sensation calculator correspond to each other, and execute a process of correction for the signal output from the comfort sensation calculator, when both of the signals do not correspond to each other. an RRI (R-R Interval) detector configured to detect an RRI from a pulse wave of the occupant; a comfort sensation calculator configured to quantitatively calculate comfort sensation of the occupant from the RRI detected by the RRI detector, and output a signal indicating the comfort sensation of the occupant; a target control value setter configured to set a target control value of the thermal environment control device, based on the signal output from the comfort sensation calculator, which indicates the comfort sensation of the occupant; and an occupant thermal sensation calculator configured to obtain a thermal model of the occupant based on thermal sensation calculation information containing the thermal environment around the occupant which is detected by the thermal environment detector and an operation state of the thermal environment control device, quantitatively calculate thermal sensation of the occupant, and output a signal indicating the calculated thermal sensation, wherein the target control value setter is configured to determine whether the signal from the comfort sensation calculator and the signal from the occupant thermal sensation calculator correspond to each other, and execute a process of correction for the signal output from the comfort sensation calculator, when both of the signals do not correspond to each other.