Question

is it possible to destroy magnetic field by some means

Answer 1

well.. i dunno what exactly you are talking about ..

but if u mean can you somehow make a ferromagnet lose all its properties.. then yea..

you can heat it above the curie temperature, or maybe knock it with a hammer .. or there is another way in which you take through cycles of magnetization and then demagnetize it.. but in the former two the ferromagnet becomes a paramagnet, and in the later, it remains a ferro, but loses its magnetization

if you mean destroy magnetic field literally.. then depends on what level you are talking about
forexample if you have two current carrying loops in opposite direction kept very close.. then you kill the magnetic field due to vector cancellation..

but if you really wanna destroy magnetic field lines.. then you ll have to make sure there are no charges moving cause moving charges create magnetic fields.. every matter has moving electrons so every matter produces very very very feeble magnetic field.. so to destroy it you have to stop these electrons from moving.. and the only way i can think of doing that is cooling it to zero K.
But some become a super conductor :P..