The utility model provides a design formula door and window entrance to a cave formwork support, includes the rectangle support frame, the rectangle support frame connects through longitudinal support between two rectangular frame and fix, and fixed multiply wood is laid to the periphery including the rectangular frame of the two -layer superpose in front and back, be equipped with the bracing between every layer of rectangular frame's the adjacent edge, the left and right sides two corresponding longitudinal support go up to connect and are fixed with horizontal support, and the inboard on two perpendicular limits corresponds the high angle steel that is fixed with respectively, longitudinal support's both ends are fixed respectively on two rectangular frame in front and back correspond the angle steel of positions. The utility model discloses can be used to the inconvenient condition of the door and window entrance to a cave independent formwork, it is good to have a wholeness, the unsuitable high characteristics of distortion strength, assurance door and window entrance to a cave formwork form removal quality that can be good, the utility model discloses can wholly dismantle, the simple installation, adjustment of size is simple and easy, and there is the deviation problem of door and window dimension of opening in the good right list engineering of answering.