Safety helmet with alarm function

The utility model discloses a safety helmet with an alarm function, and belongs to the technical field of safety helmets. A safety helmet with an alarm function comprises a helmet body, and further comprises a mounting box fixedly connected in the helmet body; the circuit board is fixedly connected in the mounting box; the processing chip is electrically connected to the circuit board; the alarm sensing wire is electrically connected to the circuit board; the buzzer is electrically connected to the circuit board; the battery box is fixedly connected to the mounting box, and a battery bin is formed in the battery box; current signals of a used surrounding electric field are detected through the alarm induction wire, a buzzer makes a sound to remind a user, the alarm induction wire and the cap body are installed together, carrying is convenient, the size is small, automatic power-on work can be achieved by wearing the cap body, and the situation that a circuit board cannot be powered on to work due to the fact