A near-field measurement system includes a measurement probe 11 that receives a radio signal that is transmitted from an antenna under measurement 110 at a plurality of measurement positions included in a predetermined scan range, a frequency converter 13 that frequency-converts a frequency of the radio signal to a desired frequency, a timing processing unit 18 that generates a timing signal for starting measurement of an amplitude and a phase of the radio signal from a trigger signal output from a transmission device 100 in synchronization with transmission of the radio signal, and an amplitude and phase calculation unit 19 that acquires a radio signal frequency-converted by a frequency converter 13 and digitized by an A/D converter 14a on the basis of a timing signal for each measurement position and calculates an amplitude and a phase in a near field of the acquired radio signal.