The invention relates to a preparing method for a carbon nano tube multi-dimensional woven preform and ceramic matrix composite.The preparing method includes the steps that CNTs fibers or CNTs paper is deposited to form a PyC interface layer or ceramic matrix of a certain thickness, a perform has certain rigidity and intensity and a low stretch rate, then the CNTs paper is folded, the CNTs fibers are arrayed and laid or woven, and then a CVI technical deposition ceramic matrix is adopted for densification, and preparation of the one-dimension, two-dimension and three-dimension ceramic matrix composites is completed.The method for the CNTs perform is simple and easy to implement, the volume fraction of CNTs is wide in adjustable range, and the prepared composite meets the requirement for practical application.