The invention relates to an automatic test system for a resistor, which comprises the components of a measuring module, a base, a control module and a digital test module. The control module comprises a relay array unit, an MCU unit, a keyboard and an LED unit. The measuring module, the base, the relay array unit and the digital test module are successively connected. The keyboard, the MCU unit and the relay array unit are successively connected. The MCU unit is connected with the LED unit. The automatic test system for the resistor can measure the to-be-tested resistor through the measuring module according to a four-wire method and furthermore automatically control measurement to the to-be-tested module through the control module, thereby eliminating effect of lead resistance and contact resistance to measurement to the resistance, and effectively improving testing efficiency to the resistor.