Abstract
With its unique scale pattern and color pattern, herbaceous fish skin is one of the popular high-grade leather. Its physical and mechanical properties, such as tensile strength, are important indicators to measure the inner quality of leather. This paper adopts a set of horizontal tensile testing machine for different parts of the grass fish skin stretch experiment, and the error source is analyzed, the results showed that the experimental scheme can realize the mechanical properties of the flexible materials such as grass fish skin tests, and the accuracy and reliability. The results showed that the strength of the fish skin was different in the head, abdomen and tail, which was related to the function of the fish.