PCBA circuit board for Bluetooth earphone

The utility model discloses a PCBA circuit board for a Bluetooth earphone, which comprises a PCBA assembly, the PCBA assembly comprises a circuit board assembly, the circuit board assembly comprises a protection piece, a circuit board piece is embedded in the protection piece, the protection piece comprises a surrounding pad, the surrounding pad comprises a metal layer, an elastic layer is wrapped outside the metal layer, a flame-retardant layer is bonded outside the elastic layer, and the flame-retardant layer is bonded outside the elastic layer. The circuit board assembly is sleeved with a fixing piece, the fixing piece comprises a plurality of metal strips, and the metal strips are copper strips. According to the utility model, the surrounding pad made of the metal layer, the elastic layer and the flame-retardant layer wraps the circuit board assembly to form a protection piece, so that the protection capability of the PCBA circuit board can be enhanced, the probability that the Bluetooth falls off the PCB