Provided is a wireless environment evaluation method including a step 1 acquiring a transmission and reception history of wireless signals transmitted and received between the plurality of wireless stations and acquiring or estimating a number of wireless stations in transmission standby, based on the transmission and reception history; a step 2 calculating a normal reception rate S in a congesting situation in reception according to the number of wireless stations in transmission standby; a step 3 acquiring a normal reception rate S′ of the wireless signals per a fixed channel use time from the transmission and reception history in the prescribed wireless station; and a step 4 determining a degree of the exposed situation in reception according to a ratio of the normal reception rate S′ to the normal reception rate S.