Intuitionistic fuzzy entropy is used to characterize the uncertainty and unknownness of intuitionistic fuzzy sets. This paper first introduces the definition of fuzzy entropy and gives the relevant knowledge of intuitionistic fuzzy sets. Since entropy is used to measure the degree of chaos in the system，intuitionistic fuzzy entropy is used to measure its uncertainty，i.e.，membership，non-membership and hesitation affect the intuitionistic fuzzy entropy，and then this idea is used to analyze and deeply explore the intuitionistic fuzzy entropy. There is an axiom definition to identify existing defects and modify them. Then the existing intuitionistic fuzzy entropy formula is analyzed，the main points are summarized，and a new calculation formula is proposed. Finally，an example is given to illustrate the fact that the content proposed in this paper conforms to the objective law.