To magnetically record information sufficiently regardless of the occurrence of spacing between a magnetic recording part and a magnetic head due to bend of a magnetic card.

With respect to a multi-channel magnetic head 1, plural magnetic core half bodies 2a and 2b are butted against each other respectively, and plural magnetic gap parts 4 are formed in these butting parts 3 and plural magnetic gap parts 4 are slided on a magnetic medium to record data on the magnetic medium. Gap spaces of plural magnetic gap parts 4 of this multi-channel magnetic head 1 are made different on the basis of the probability of the occurrence of a spacing to the magnetic medium.