Bucket-based breakwater structure is used in many engineering practice for the coastal engineering of deep soft
soil，but the stability of multi-compartment single-bucket structure has not yet been distinct. In this paper，the stability of
Bucket -based breakwater structure is investigated using by physical model tests and numerical simulation method. Soil
parameters in numerical model are verified by physical model tests， and then through the numerical model study the
influence law of soil parameters to bearing capacity and the displacement of the structure，and the influence law of structure
buried depth to bearing capacity and the displacement of the structure. Numerical model results show the law of soil elastic
modulus for displacement to play a controlling role is obtained；especially it is the more sensitive for low modulus elasticity
soil. The soil friction angle and cohesion have a significant effect for bearing capacity，increasing the friction angle and
cohesion to significantly improve the bearing capacity of the structure. It found that the bottom of the structure to reach the soil
surface high bearing capacity can significantly improve the bearing capacity by varying the structure buried depth. The
research results are referenced for engineering structure design and optimization.