1. A circuit board structure, wherein the circuit board structure comprises:at least two mounting substrates, configured to mount electrical component; and
a flexible conductive substrate, defined between two adjacent mounting substrates to electrically connect with the two mounting substrates, and the flexible conductive substrate bends towards a side of its board surface to form a protruding part;
wherein the protruding part comprises a first bending section and a second bending section, the first bending section, the second bending section and a plate surface of the flexible conductive substrate form a triangular prism, and an inclination angle of the first bending section has a range of 45 degrees to 70 degrees.