An ultrasound diagnostic apparatus and a method of controlling the same are provided herein. The ultrasound diagnostic apparatus includes a probe having a connector, provided with a shaft, and a probing part, the probing part being connected to the connector through a cable so as to irradiate ultrasound waves to an object to be examined and receive the ultrasound waves reflected from the object, a main body connected with the probe so as to create an image of the object, which corresponds to the ultrasound waves received to the probing part of the probe, a coupling assembly to detect contact between the main body and the connector and to fix the connector to the main body by automatically driving the shaft of the probe, and a controller to control driving of the coupling assembly when the contact between the main body and the connector is detected.