The invention discloses a nucleus structural model, and relates to the technical field of nucleuses. The nucleus structural model comprises a main structure and an auxiliary structure, wherein the main structure adopts a 1-3-axis 1-7-layer gyro structure, sequentially comprising a helium axis, 8 pairs of single-stranded protons as a second layer, 8-18 pairs of protons as third, fourth, fifth and sixth layers, and supporting protons as an outmost layer; the nucleus structure model adopts a principle as follows: the second layer formed by 8 pairs of the single-stranded protons has a first determinant factor as follows: arrangement of the 8 pairs of the single-stranded protons is adapted to gyro needs and magnetic needs and the 8 pairs of the single-stranded protons are tightly arranged. The nucleus structural model helps people to understand the nature, benefits physical, chemical and mechanical researches, facilitates the development of materials, is conducive to the development of biochemical, biological, medical and pharmaceutical sciences and other related disciplines, is helpful to teaching activities, and can be a model for developing the intelligence of children.