Question

how our inner organs doesnot move and stay in proper order inside our body ,
even when we jump ? is there any supporting system in our body

Answer 1

The support system is very important to all animals as well as humans .Without a support system, the body would just collapse.The elephant, for example, will not have any particular shape.It would not be able to raise its body above the ground, and therefore would have great difficulty walking on land.
as humans have muscles and bones which r connected together and help us not only to move r body but also for different movements like jumping. cycling,walking  ETC 

Answer 2

thats because of our bones that is sketetal system they work to place our organs in the right place 
its our support system which helps them to place in order