To provide a rotary magnetic recording device permitting to decrease parts count and work man-hour required for connecting a rotary transformer with a magnetic head.

In a rotary magnetic recording device having such a structure as an under drum on a static side where a stator of a rotary transformer is mounted is opposed to an upper drum on a rotary side where a magnetic head is mounted, and said the rotor 4R of said rotary transformer is rotated together with said upper drum in one body, a part of said rotor is provided with terminal parts 20 extending in the direction of said magnetic head, and these terminal sides are directly soldered to a winding of said rotor and said magnetic head.