Softsediment deformation (SSD) are reliable evidences for demonstrating paleoearthquake occurrences in tectonically active regions. However，many researchers only noticed the shape classification of SSD. In contrast，systematic discussion the genetic analysis，trigger mechanism，deformation process of SSD are lack. What's more，whether the SSD can record seismic events，and the relationship between intensity of SSD and the earthquake magnitudes and epicenter distances remains a matter of debate. Focusing on this topic，we choose a typical deformation of load，ballandpillow structure in SSD，from its specific characteristic，genetic analysis，trigger mechanism，deformation process，deformation intensity，and the relationship with earthquake magnitudes and epicentral distances. The statistical results show that load，ballandpillow structure represent a minimum seismic magnitude of 5 and maximum magnitude of more than 8, and mostly correspond to magnuitudes 6-7 and epicentral distances of 20-70 km. For a given intensity of load，ballandpillow structure, a largest earthquake magnitudes is required to generate these structures in lacustrine sediments，followed by fluviolacustrine，marine sediments. The deformation layer width and thickness of load，ballandpillow structure and ball radius sizes，which have positive correlation with earthquake magnitudes.The lithology is not directly corresponding to the earthquake magnitudes. It is possible to assesment of epicentral location or the maximum liquified distances by using the earthquake magnitude which evalute from the intensity of SSD，also in turn. SSD not only can record seismic events，but also evalute the earthquake magnitudes and epicentral location according to their deformation form，size and intensity etc. So the SSD provides a relatively independent research interests for the paleoearthquake research.