The number of soil-pile foundation shaking table tests conducted at home and abroad is increasing year by year, in which the time similarity ratio is the key to ensure that the downsizing model of the shaking table test can accurately respond to the seismic response of the prototype system. At present, there have been a lot of researches on the design of similarity ratio of the shaking table test, but there are few discussions on the time-holding compression of the ground vibration and the ratio of the ground vibration time-holding compression. In this paper, we analyze the soil-pile foundation shaking table test that has been carried out, which takes the time similarity ratio as a variable, and discusses the time similarity ratio problem by inputting the ground shaking with three different time-holding compression ratios. The corresponding numerical simulations of the shaking table test model and its prototype have been carried out through Abaqus software, and the selection of the time similarity ratio has been discussed while validating the shaking table test.