To simultaneously measure and record data and electrocardiogram waveform data concerning the hardening of carotid arteries and vertebral artery, and the deformation of cervical vertebrae with an electrocardiograph.

This extended function type Holter electrocardiograph with a biological information detector is structure so as to record biological information signals detected by the following sensors, 4, 5, 6 and 7 in a recording section 3 together with electrocardiogram signals detected by an induction electrode 2 by connecting the recording section 3 for saving data and the built-in behavior detection sensor 4 made up of an acceleration meter in the body 1, and by connecting a plurality of induction electrodes 2, the sound collection sensor 5 collecting sounds generated during deformation of the cervical vertebrae, the tension detection sensor 6 detecting the degree of tension of the cervical muscle and the external behavior detection sensor 7 detecting movement at the vicinity of the cervical vertebrae to the body 1 through connecting cords 2A, 5A, 6A and 7A.