A self-balance noise reduction metal detection double-coil comprises a main magnetic field transmitting coil (L) and multiple groups of induction coils (L1). The induction coils (L1) are serially formed by two inductors and induction single coils (La1, Lb1) having close Q values, two induction single coils (La1, Lb1) are disposed in parallel, two adjacent groups of induction coils (L1) are disposed in an overlapping manner, and the multiple groups of induction coils (L1) are disposed in the main magnetic field transmitting coil (L). The induction coils do not need to be adjusted, the electromagnetic interference resistance capability is strong, false alarms are unlikely to occur, weak induction regions do not exist, normal operation in a complex metal environment can be implemented without interference, the structure is simple, the machining is easy, and batch production can be carried out.
