A fixing method comprising: fixing a toner on a recording medium with a fixing device, wherein the toner comprises a binder resin, a colorant, and a release agent, wherein the toner has a release agent amount indicator of from 0.01 to 0.20, the release agent amount indicator represented by a ratio (P 2850 /P 828) of an intensity (P 2850) at a wave number of 2,850 cm -1 to an intensity (P 828) at a wave number of 828 cm -1 of the toner measured by a Fourier transform infrared spectroscopy attenuated total reflection method, wherein the fixing device includes: a fixing rotator driven to rotate by a driving source; a pressure rotator driven to rotate by rotation of the fixing rotator; a fixing belt interposed between the fixing rotator and the pressure rotator; and a heater to heat the fixing belt, wherein the toner has a glass transition temperature (Tg 1st) of from 45°C to 65°C measured in a first temperature rising in a differential scanning calorimetry, as measured according to the description, wherein a THF-insoluble matter in the toner has two glass transition temperatures Tg a1st of from -45°C to 5°C and Tg b1st of from 45°C to 70°C measured in the first temperature rising in the differential scanning calorimetry, as measured according to the description, wherein a THF-soluble matter in the toner has a glass transition temperature (Tg 2nd) of from 40°C to 65°C measured in a second temperature rising in the differential scanning calorimetry, as measured according to the description. fixing a toner on a recording medium with a fixing device, wherein the toner comprises a binder resin, a colorant, and a release agent, wherein the toner has a release agent amount indicator of from 0.01 to 0.20, the release agent amount indicator represented by a ratio (P 2850 /P 828) of an intensity (P 2850) at a wave number of 2,850 cm -1 to an intensity (P 828) at a wave number of 828 cm -1 of the toner measured by a Fourier transform infrared spectroscopy attenuated total reflection method, wherein the fixing device includes: a fixing rotator driven to rotate by a driving source; a pressure rotator driven to rotate by rotation of the fixing rotator; a fixing belt interposed between the fixing rotator and the pressure rotator; and a heater to heat the fixing belt, wherein the toner has a glass transition temperature (Tg 1st) of from 45°C to 65°C measured in a first temperature rising in a differential scanning calorimetry, as measured according to the description, a fixing rotator driven to rotate by a driving source; a pressure rotator driven to rotate by rotation of the fixing rotator; a fixing belt interposed between the fixing rotator and the pressure rotator; and a heater to heat the fixing belt, wherein the toner has a glass transition temperature (Tg 1st) of from 45°C to 65°C measured in a first temperature rising in a differential scanning calorimetry, as measured according to the description, wherein a THF-insoluble matter in the toner has two glass transition temperatures Tg a1st of from -45°C to 5°C and Tg b1st of from 45°C to 70°C measured in the first temperature rising in the differential scanning calorimetry, as measured according to the description, wherein a THF-soluble matter in the toner has a glass transition temperature (Tg 2nd) of from 40°C to 65°C measured in a second temperature rising in the differential scanning calorimetry, as measured according to the description.