The invention discloses a composite board provided with honeycomb paperboards. The composite board provided with honeycomb paperboards comprises a main body, rectangular notches, fire retardant acrylic fiber single yarn, and fire retardant terylene single yarn; the top end of the main body is provided with a first connecting strip; grooves are uniformly distributed in the first connecting strip; the bottom end of the main body is provided with a second connecting strip; projections matching the grooves are uniformly distributed at the bottom end of the second connecting strip; one side of thefirst connecting strip is provided with an inserting groove; one side of the second connecting strip is provided with an inserting groove; the other side of the first connecting strip is provided withan inserting rod matching the inserting groove; the other side of the second connecting strip is provided with an inserting rod matching the inserting groove; the rectangular notches are uniformly distributed at the middle part of the internal part of the main body. According to the composite board, a tension force reinforcing layer is uniformly arranged between a honeycomb core material and fiber, accommodating chambers and connecting binder are uniformly arranged between the tension force reinforcing layers, so that composite board strength is increased, composite board service life is prolonged, and the composite board is suitable for preparation of products of different strength.