Abstract: Safety monitoring is an important measure for the safe operation of water conservancy projects. The monitoring model plays an important role in monitoring data analysis, and is widely used in the safety monitoring of reservoirs and dams. However, its relevant theories and studies are rarely applied in port terminals. Since high-pile wharves are different from reservoirs and dams in working environment and working behavior, it is necessary to develop a monitoring model for high-pile wharves considering their own working characteristics. In this paper, it is proposed that principal effect factors of crack opening displacement of high-pile wharves are the temperature component, wind component, heap load component and aging effect, according to the change law of dependent and independent variables. The expressions of these factors are given. On the basis of it, the statistical model and the least squares support vector machine (LSSVM) model of crack opening displacement are established respectively. The evaluation method for these models is developed. Models are used in the fitting and prediction of data series of crack opening displacement of a high-pile wharf. The effectiveness and reasonableness of the models are verified. The results show that the proposed models with high precision and certain prediction ability can provide scientific principles for data analysis and safety monitoring of high-pile wharves.