The invention relates to a motor-type automatic ultrasonic probe for elasticity imaging, which comprises a probe core part, a
handle, a probe seat, a connection base, a
linear motor, a sliding shaft, a sliding bearing, a
pressure sensor and a spring. The probe core part is connected with an output shaft of the
linear motor by the sliding shaft; both ends of the spring are respectively connected with the probe seat and the upper end of the
pressure sensor; and the lower end of the
pressure sensor is connected with the probe core part. A user only needs to hold the
handle with a hand and the probe core part is very easy to keep always in contact with a checked part, so that working intensity of a checking doctor is reduced and the problem of interruption of elasticity imaging, which is caused by the case that the probe core part is separated from the checked part, is avoided; an acting force applied by the
linear motor is perpendicular to the surface of the probe core part, so that quality of elasticity imaging is improved; and moreover, the pressure sensor is arranged at the back of the probe core part, so that the stress condition of the checked part is more accurately detected and the
elastic modulus of the checked part is better reflected, and thus, elasticity difference of the checked part and the surroundings thereof is more accurately judged.