A detection distance calibration method, comprising: collecting at least one detection signal; determining a strength value of the at least one detection signal, wherein the strength value of the detection signal reflects a length of a detection distance; determining a reference strength value of the at least one detection signal according to the strength value of the at least one detection signal; determining a calibration threshold according to the reference strength value, wherein the calibration threshold is used to determine a calibration range of the detection distance; and calibrating the detection distance according to the calibration threshold and a strength value of a subsequently collected detection signal; characterized in that the determining a calibration threshold according to the reference strength value specifically comprises: determining whether the reference strength value exceeds a preset maximum reference strength value; and using (S1022a) a preset default value as the calibration threshold if the reference strength value exceeds the preset maximum reference strength value, wherein the default value is a reference value determined according to at least one collected stable detection signal; or using a sum of the reference strength value and a fixed parameter value as the calibration threshold if the reference strength value does not exceed the preset maximum reference strength value. collecting at least one detection signal; determining a strength value of the at least one detection signal, wherein the strength value of the detection signal reflects a length of a detection distance; determining a reference strength value of the at least one detection signal according to the strength value of the at least one detection signal; determining a calibration threshold according to the reference strength value, wherein the calibration threshold is used to determine a calibration range of the detection distance; and calibrating the detection distance according to the calibration threshold and a strength value of a subsequently collected detection signal; characterized in that the determining a calibration threshold according to the reference strength value specifically comprises: determining whether the reference strength value exceeds a preset maximum reference strength value; and using (S1022a) a preset default value as the calibration threshold if the reference strength value exceeds the preset maximum reference strength value, wherein the default value is a reference value determined according to at least one collected stable detection signal; or using a sum of the reference strength value and a fixed parameter value as the calibration threshold if the reference strength value does not exceed the preset maximum reference strength value. determining whether the reference strength value exceeds a preset maximum reference strength value; and using (S1022a) a preset default value as the calibration threshold if the reference strength value exceeds the preset maximum reference strength value, wherein the default value is a reference value determined according to at least one collected stable detection signal; or using a sum of the reference strength value and a fixed parameter value as the calibration threshold if the reference strength value does not exceed the preset maximum reference strength value.