Abstract: What is a subjective environment?What are its characteristics?This articleattempts to make some research about subjective environment and to employ itscharacteristics in urban planning.According to the results of this investigation,people do not perceive theGanzhou city as an ancient city surrounded by two rivers.In other words,thecityconstruction of Ganzhou does not give people the impression of itsdistinguishing features.It is a pity for wasting such scenery resources.Another important enlightenment is that how we should design the roads fora city,especially a city in China,since there are so many bicycles to be used onthe road in our eotmtry.The “Three Parts” road planning……the main part of theroad for motor vehicles,and two subparts for bicycles……seems to be the mostsuitable design to be used in our clties.And the road system seems to be betterimpressed when roads intersect each other at right angles.Furthermore,as comparing this investigation with D.Appleyard’s of Cindadin Guayana,we are Sure that there are objective statistical laws for people’sperception as inhabitants are grouped by their various differences.