The present invention provides an inter-tern short-circuit detection device, an analysis method and a device for a voltage transformer. The analysis method comprises the following steps of acquiring a voltage acquired by the inter-tern short-circuit detection device for the voltage transformer, and analyzing the voltage to determine whether the to-be-tested voltage transformer has an inter-tern short-circuit fault or not. The inter-tern short-circuit detection device for the voltage transformer comprises an impulse voltage generator, a to-be-measured voltage transformer, a sampling resistor and a voltage acquisition device. The impulse voltage generator is connected with the high-voltage end of the to-be-tested voltage transformer. The low-voltage end of the to-be-tested voltage transformer is connected with one end of the sampling resistor. The other end of the sampling resistor is grounded. The sampling resistor and the voltage acquisition device are connected in parallel. The impulse voltage generator is used for applying a generated impulse voltage onto the to-be-measured voltage transformer. The voltage acquisition device is used for acquiring the voltage applied at the two ends of the sampling resistor. By means of the inter-tern short-circuit detection device and the inter-tern short-circuit analysis device for the voltage transformer, the inter-tern short-circuit fault of the voltage transformer can be effectively detected.