The invention provides a battery detection circuit which comprises an alternating current constant current driving module, a constant value resistor R1, a first blocking capacitor module, a second blocking capacitor module, a first voltage collection module and a second voltage collection module, wherein the input end of the alternating current constant current driving module is used for being connected with a power supply; the output end of the alternating current constant current driving module is used for being connected with a positive electrode of a battery to be tested; the first end ofthe constant value resistor R1 is used for being connected with a negative electrode of the battery to be tested; the second end of the constant value resistor R1 is used for being grounded; the firstvoltage collection module is connected with the battery to be tested through the first voltage collection module; and the second voltage collection module is connected with the constant value resistor R1 through the second blocking capacitor module. Through the alternating current constant current driving module, an alternating current constant current source is provided for the battery to be tested and the constant value resistor; the alternating current voltage at two ends of the battery to be tested and the alternating current voltage at two ends of the constant value resistor are collected; and the direct current component of the battery to be tested per se is filtered, so that the alternating current impedance of the battery is accurately obtained, i.e., the accurate detection on thebattery performance is realized.