The utility model relates to the technical field of circuit boards. The utility model further discloses an oil leakage prevention polymer ceramic circuit board. The circuit board comprises a frame body, a circuit board body, a U-shaped frame, a waterproof curtain, a micro fan and two needle cylinders, the circuit board body is located in an inner cavity of the frame body, the U-shaped frame is located on the front side of the front face of the frame body, the waterproof curtain is located on the rear side of the inner cavity of the frame body, the micro fan is located on the rear side of the waterproof curtain, and the two needle cylinders. The miniature water pumps are arranged in the top plate and the bottom plate; cONTINUOUS FLOW OF CONDENSATE, cold air is transmitted to circuit board body, hot air generated by the work of the circuit board body is dissipated; compared with a traditional ceramic circuit board, the ceramic circuit board is provided with two sets of heat dissipation devices, so that the heat dissipation effect of the circuit board body is better, the situation that the circuit board body emits oil due to heat and the work of the circuit board body is influenced iseffectively prevented, and the service life of the circuit board body is also ensured.