本发明提供一种近接传感器及其侦测方法。此近接传感器包括近接传感单元以及控制单元。近接传感单元用以反应于物体而产生传感值。控制单元耦接近接传感单元。控制单元自近接传感单元获得传感值，比较传感值与默认值得到比较结果，根据该比较结果计算状态累计时间，且判断状态累计时间是否超过默认时间，以判断物体的近接状态。

A proximity sensor and a detection method thereof are provided. The proximity sensor includes the proximity sensing unit and a control unit. The proximity sensing unit is used for responding to an object to generate a sensing value. The control unit is coupled to the proximity sensing unit. The control unit obtains the sensing value from the proximity sensing unit, compares the sensing value and a default value to obtain a comparing result, calculates status accumulative times according to the comparing result, and determines whether the status accumulative times exceed a default time, so as to determine a proximity status of the object.