A contact type apparatus for inspecting side channels of a smartcard comprising: a contact inspection unit configured to adjust a voltage level for a power analysis using an operational amplifier (OP-AMP, 101) connected to a ground terminal (GND, 111b) of the smartcard while the smartcard performs an encryption algorithm; a signal analysis unit configured to receive a voltage change signal generated when the smartcard performs the encryption algorithm and analyzing a waveform; and a control unit configured to control an operation of the contact inspection unit and the signal analysis unit, characterized in that: the contact inspection unit comprises the operational amplifier and a variable resistor connected to the operational amplifier, wherein an inverting input terminal of the operational amplifier is connected to the ground terminal of the smartcard, a non-inverting input terminal thereof is connected to a ground of the contact type apparatus for inspecting side channels, and an output terminal thereof is connected to an input terminal of the signal analysis unit, and wherein an input terminal of the variable resistor is connected to the inverting input terminal of the operational amplifier, and an output terminal thereof is connected to the output terminal of the operational amplifier. a contact inspection unit configured to adjust a voltage level for a power analysis using an operational amplifier (OP-AMP, 101) connected to a ground terminal (GND, 111b) of the smartcard while the smartcard performs an encryption algorithm; a signal analysis unit configured to receive a voltage change signal generated when the smartcard performs the encryption algorithm and analyzing a waveform; and a control unit configured to control an operation of the contact inspection unit and the signal analysis unit, characterized in that: the contact inspection unit comprises the operational amplifier and a variable resistor connected to the operational amplifier, wherein an inverting input terminal of the operational amplifier is connected to the ground terminal of the smartcard, a non-inverting input terminal thereof is connected to a ground of the contact type apparatus for inspecting side channels, and an output terminal thereof is connected to an input terminal of the signal analysis unit, and wherein an input terminal of the variable resistor is connected to the inverting input terminal of the operational amplifier, and an output terminal thereof is connected to the output terminal of the operational amplifier. the contact inspection unit comprises the operational amplifier and a variable resistor connected to the operational amplifier, wherein an inverting input terminal of the operational amplifier is connected to the ground terminal of the smartcard, a non-inverting input terminal thereof is connected to a ground of the contact type apparatus for inspecting side channels, and an output terminal thereof is connected to an input terminal of the signal analysis unit, and wherein an input terminal of the variable resistor is connected to the inverting input terminal of the operational amplifier, and an output terminal thereof is connected to the output terminal of the operational amplifier.