The invention discloses a voltage transformer secondary circuit multi-point grounding rapid position finder and a searching method. The position finder comprises an adjustable voltage source, an adjustable resistor, a main power source output loop switch, an adjustable resistor switch, a bypass switch and a current detector; the adjustable voltage source and the adjustable resistor are connected with each other so as to form a main power output loop; the main power output loop switch is connected in series with the main power source output loop; the adjustable resistor switch is connected in series between the main power source output loop switch and the adjustable resistor; one end of the bypass switch is connected with the adjustable resistor switch, and the other end of the bypass switch is connected with the adjustable resistor switch; and the current detector is connected in series with the main power source output loop and the branch of the adjustable resistor. The position finder can search a grounding point on the basis of a resistance method and a shunting method; the position finder can be effectively applied to a variety of grounding conditions, so that the position finder has a wide application range; and the position finder enables the search and positioning of voltage transformer secondary circuit multi-point grounding to be free from the influence of grounding modes and can quickly search grounding points under any circumstances.