The invention discloses a whistling type fault indicator for a 10kV line. The whistling type fault indicator for the 10kV line comprises a foundation, a clamping device, a monitoring device and an alarm device, wherein the foundation is fixed with a casing, the casing is internally fixed with the monitoring device and the alarm device, the foundation is connected with the clamping device, and the clamping device is fixed below the foundation through a screw. The whistling type fault indicator is advantaged in that a fault line and a fault point can be accurately determined, properties of stable performance, high precision, strong anti-interference capability, attractive appearance and convenient mounting are realized, the whistling type fault indicator is rapid to start, and start can be realized within 0.1 second; service life is long, and a motor can be switched on and off for more than 100000 times without damage; automatic reset can be realized; after power supply of the line recovers, the fault indicator can reset automatically, the reset time is short, and automatic reset can be realized within 0.1 second; live-line loading and unloading can be realized; live-line loading and unloading are quite simple, and line operation is not influenced; technical means is provided for searching hidden fault points; the fault line and the fault point can be rapidly determined, and the fault elimination time is shortened.