The utility model discloses a data acquisition circuit of an ultrasonic ice melting sensor, which belongs to the field of ultrasonic measurement technology, and relates to an improved ultrasonic ice melting sensor which is used to detect the surface ice thickness of an airplane. The data acquisition circuit of an ultrasonic ice melting sensor comprises a DSP[1] and a clock circuit [5], and is characterized in that the data acquisition circuit consists of the DSP [1], the clock circuit [5], a differential amplifier circuit [2], a first A/D drive circuit [3], a second A/D drive circuit [4], a first A/D conversion circuit [6], a second A/D conversion circuit [7] and four cache memory circuits. The data acquisition circuit of an ultrasonic ice melting sensor adopts the parallel sampling and cache memory circuits, thereby reducing the sampling and cache memory working efficiency, and greatly reducing the cost of the whole ultrasonic ice melting sensor.