The invention discloses an infrared proximity transducer capable of inhibiting an environmental noise. In the prior art, there are problems of poor capability for inhibition of environmental noises and high fallout ratio on the condition of strong background light and high temperature; however, the above-mentioned problems are solved by utilizing the infrared proximity transducer. The infrared proximity transducer comprises a photodiode circuit, an infrared emitting diode, a current control circuit, an analog to digital conversion circuit, a digital to analog conversion circuit, a time sequence control circuit and a data storage circuit. The photodiode circuit converts a detected optical signal to a current signal; the current signal passes through the current control circuit and is output to the analog to digital conversion circuit; the digital to analog conversion circuit converts an output of the analog to digital conversion circuit into a current signal and then the current signalis feedbacked to an input terminal of the analog to digital conversion circuit; the output of the analog to digital conversion circuit is sent to an external microprocessor through the data storage circuit; and the time sequence control circuit provides a time sequence control signal for all circuits. According to the invention, an effect of filtering and removing environmental noises is good; and a degree of closeness of an object can be accurately detected in the environment of strong background light and high temperature; therefore, the infrared proximity transducer can be applied to intelligent control of electronic products.