The invention provides a reconfigurable filter circuit for realizing plural filters and low-pass filtering. The reconfigurable filter circuit is characterized in that a positive electrode input (Iin+) of a first radio frequency signal (I circuit) is connected with one end of a first resistor (R1), the other end of the first resistor (R1) is connected with one end of a second resistor (R2), the positive end of a first capacitor (C1), one end of a second switch (SL2) needing to be switched off when the low-pass filter function is realized, and one end of a third switch (SL3) needing to the switched off when the low-pass filter function is realized; and the other end of the third switch (SL3) needing to be switched off when the low-pass filter function is realized is connected with the negative end of a third capacitor (C3). According to the reconfigurable filter circuit, two filter functions are realized by configuring a hardware circuit, a chip area and the circuit power consumption are reduced greatly, and meanwhile the two-step filter characteristic can be realized by the two operational amplifiers, so that the chip area and the circuit power consumption can be further reduced.