Portable contour line mapping teaching aid

The utility model discloses a portable contour line mapping teaching aid in the technical field of contour line teaching aids, which comprises a model frame with a three-dimensional frame structure and a support bottom frame movably arranged below the model frame, the cover plate rotates around the joint of the cover plate and the model frame to close the model frame inside; a three-dimensional model carrying position is arranged on the model frame, a two-dimensional plane carrying position is arranged on the supporting bottom frame, a model block set forming a three-dimensional structure is movably installed on the three-dimensional model carrying position, and a contour line drawing board matched with the model block set is movably installed on the two-dimensional plane carrying position. When being stored, the three-dimensional stereo structure display device can be folded and carried to meet the carrying requirements of different environments, a three-dimensional stereo structure and a two-dimensional con