To provide a print head in which variation is suppressed among displacement elements.

The print head is produced by bonding a piezoelectric actuator 1 through a bonding layer to a channel member 3 comprising a liquid pressurization chamber 3a, an opening for introducing liquid into the liquid pressurization chamber 3a, and an opening 8 for ejecting the liquid. The piezoelectric actuator 1 is provided with a plurality of surface electrodes and the difference of thermal expansion coefficient is set at 2×10-6/°C or less between the piezoelectric actuator 1 and the channel member 3.

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