The rocks and ores of nature have different magnetic properties, which can produce different magnetic fields, which cause the earth's magnetic field to change in local areas and exhibit geomagnetic anomalies. These magnetic anomalies are discovered and studied using proton magnetometers, which in turn can be used to find magnetic ore bodies and to study geological structures. Magnetic exploration is one of the commonly used geophysical exploration methods. It is mainly used to find and explore related minerals (such as iron ore, lead-zinc ore, copper ore, etc.), to carry out geological mapping, etc.