The invention provides a bearing heat treatment technology, and relates to the technical field of processing of bearings. The bearing heat treatment technology comprises the following steps of (1) balling and annealing: heating a bearing to the temperature of 750 to 770 DEG C, warming for 1 to 3h, cooling to the temperature above 600 DEG C at the cooling speed of 20 to 40 DEG C/h, discharging outof a furnace, and cooling by air; (2) quenching: heating to the temperature of 580 to 620 DEG C at the heating speed of 10 to 15 DEG C/h, preheating for 37 to 43min at the temperature of 580 to 620 DEG C, heating to the temperature of 830 to 850 DEG C at the heating speed of 8 to 12 DEG C, quenching and warming for 87 to 93min, cooling by oil, and controlling the oil temperature to 60 to 80 DEG C;(3) tempering: tempering the bearing by oil at low temperature, heating to the temperature of 170 to 190 DEG C at the heating speed of 10 to 15 DEG C/h, and warming for 60 to 90min; (4) cold treatment: cooling to the temperature below 100 DEG C along with the furnace, discharging out of the furnace, and naturally cooling for 60 to 120min. The bearing heat treatment technology has the advantages that the processing precision and impact toughness of the bearing are improved, and the fatigue life is prolonged.