Piping or Wiring Support Device

It is intended to provide a function to quickly generate a piping route shape reflecting the design intention even if layout conditions are complicated. It is a piping or wiring support device having a routing difficulty level calculating function to output a scalar field, which is space weight information numerically expressing how the difficulty level of routing by the route search space of route search space parameter memory means is affected by the obstacle shape of obstacle shape memory means; and a route shape generation function to output a route passing point sequence of the route by figuring out the route shape in the route search space from the start point to the end route of the route by using the outputted scalar field.