The new type of saving chalk cover, according to the International Patent Classification (IPC), belongs to the operation and transportation department, printing division, writing or drawing utensils; office supplies major category, writing or drawing utensils subcategory, pencils or chalks Technical field of holder; pencil connector; protective device set for refill tip. Its purpose is to save the use of chalk. It is mainly composed of a pressure rod, a pen shell, a spring, a retaining ring, a chalk, a chuck, and a thread. Its characteristics are: the spring is placed and installed above the blocking ring, the blocking ring is bonded and installed at the middle position inside the pen case, and the chuck is bonded and installed at the lower opening of the pen case. The best way to realize this solution is to use plastic As materials, the basic equipment of the plastic processing factory is used to adopt mass production to meet the needs of the teaching community and realize the practical and economic value of the new saving chalk set.