The invention discloses a J-shaped pipe laying work model modeling simulation method which includes the steps: firstly, building a J-shaped pipe laying model based on a concentrated mass method; secondly, building a J-shaped pipe internal force model; thirdly, building a J-shaped pipe external force model; fourthly, building a dynamic effect model of movement of a pipe laying ship for a J-shaped pipe according to boundary conditions. The modeling method is rapid, real-time simulation requirements of a J-shaped pipe laying work simulator can be met in terms of simulation speed, simulation results can rapidly instruct on-site constructors in construction, and good reference is provided for J-shaped pipe laying designers in ocean engineering.