An ultrasonic diagnostic apparatus for imaging a needle, comprising: an ultrasonic probe configured to transmit an ultrasonic pulse to a two-dimensional scanning region or a three-dimensional scanning region including a needle-tip portion of a puncture needle (11a to be inserted in an object and receive an echo corresponding to the ultrasonic pulse as a received signal; a control unit configured to control the ultrasonic probe so as to sequentially perform, for each scanning line in the scanning region, the transmitting and receiving under a first condition where a frequency band is low, and the transmitting and receiving under a second condition and the transmitting and receiving under a third condition both where frequency bands are higher than under the first condition, or the transmitting and receiving under a first condition where a beam sound field is broad, and the transmitting and receiving under a second condition and the transmitting and receiving under a third condition both where beam sound fields are narrower than under the first condition; a basic image generating unit configured to generate a first image based on the received signal under the first condition, a second image based on the received signal under the second condition, and a third image based on the received signal under the third condition; a differential image generating unit configured to perform a differential processing based on the first image and the second image to generate a differential image; and a composite image generating unit configured to perform a composite processing based on the differential image and the third image to generate a composite image. an ultrasonic probe configured to transmit an ultrasonic pulse to a two-dimensional scanning region or a three-dimensional scanning region including a needle-tip portion of a puncture needle (11a to be inserted in an object and receive an echo corresponding to the ultrasonic pulse as a received signal; a control unit configured to control the ultrasonic probe so as to sequentially perform, for each scanning line in the scanning region, the transmitting and receiving under a first condition where a frequency band is low, and the transmitting and receiving under a second condition and the transmitting and receiving under a third condition both where frequency bands are higher than under the first condition, or the transmitting and receiving under a first condition where a beam sound field is broad, and the transmitting and receiving under a second condition and the transmitting and receiving under a third condition both where beam sound fields are narrower than under the first condition; a basic image generating unit configured to generate a first image based on the received signal under the first condition, a second image based on the received signal under the second condition, and a third image based on the received signal under the third condition; a differential image generating unit configured to perform a differential processing based on the first image and the second image to generate a differential image; and a composite image generating unit configured to perform a composite processing based on the differential image and the third image to generate a composite image.