Common issues with substandard quality of children's swimsuits include rope requirements related to wearing safety, as well as stretching and elastic elongation related to wearing comfort.

The reason for the above problems is that children's swimwear production enterprises are not aware of the safety hazards of using certain ropes in swimsuits for children, or have a poor understanding of the relevant standards for rope requirements in children's clothing. The main reason for the substandard quality of fabric stretching and elastic elongation is that enterprises do not strictly control product quality, do not have clear performance indicators for swimwear products, and do not rule out the existence of a lucky mentality in enterprises, believing that the probability of being randomly inspected is small and the products have not undergone professional testing.