The present invention relates to a handy type breast cancer examiner, which comprises: a measurement sensor for measuring a bioelectric potential at one side of a breast of a subject； a reference sensor for measuring the bioelectric potential at one side of a breast opposed to the position to which the measurement sensor unit is attached； and an inspection unit electrically connected to a peripheral sensor for measuring the bioelectric potential at a peripheral portion of a position to which the measurement sensor is attached, and measuring the bioelectric potential generated from a body. The inspection unit includes an overvoltage/overcurrent protection circuit for blocking a leakage current introduced from the outside； a differential amplifier for amplifying voltage input from the sensor； an active low pass filter for passing only a low frequency band signal among signals received from the differential amplifier； a driving amplifier for amplifying the signal passing through the active low pass filter； and an AD converter for converting the signal amplified by the driving amplifier into a digital signal. The handy-type breast cancer examiner of the present invention allows a separate grounding point to be disappeared in a human body so the distance of a measurement position is closer to reduce the impedance, thereby stabilizing a signal for a short period. In addition, a measurement method is non-invasive and an inspection can be performed in a short time so as to be very effective in terms of time economy. Furthermore, wrong diagnosis can be minimized since a precise inspection for a part to be inspected is possible by controlling the number of sensors.본 발명은 핸디형 유방함 검진기에 관한 것으로 피검자의 유방의 일측 부위의 생체 전위를 측정하는 측정센서부； 상기 측정센서부가 부착된 위치와 대칭적인 반대측 유방 일측 부위에서 생체 전위를 측정하는 기준센서부； 및 측정센서부가 부착된 위치의 주변 부위에서 생체 전위를 측정하는 주변센서부에 전기적으로 연결되고, 신체에서 발생된 생체 전위를 측정하도록 마련되는 검진부를 포함하고, 상기 검진부는, 외부로부터 유입되는 누설전류를 차단하는 과전압/과전류 보호회로； 센서부로부터 입력되는 전압을 증폭하는 차동 증폭기； 상기 차동 증폭기로부터 전달 받은 신호 중에서 저주파대역
