PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus capable of improving an S / N ratio of a received signal received from an ultrasonic probe. SOLUTION: A connector C1 to which an ultrasonic probe 20 is detachably connected, a reception processing unit 13 for receiving a reception signal related to an ultrasonic echo generated by the ultrasonic probe 20 via the connector C1, and a reception process. The signal line L1 including an image generation unit 14 that generates an ultrasonic image based on the output signal of the unit 13 and connecting the connector C1 and the reception processing unit 13 is one whose one end is connected to the connector C1. The first line L1a and a plurality of second lines L1b branching from the other end of the first line L1a and extending in parallel to the reception processing unit 13 side, and the reception processing unit 13 has a plurality of lines. An ultrasonic diagnostic apparatus that integrates received signals transmitted via each of the second lines L1b of the above by addition processing. [Selection diagram] Fig. 3【課題】超音波プローブから受信する受信信号のＳ／Ｎ比を向上させ得る超音波診断装置を提供すること。【解決手段】超音波プローブ２０が着脱自在に接続されるコネクタＣ１と、コネクタＣ１を介して、超音波プローブ２０が生成した超音波エコーに係る受信信号を受信する受信処理部１３と、受信処理部１３の出力信号に基づいて、超音波画像を生成する画像生成部１４と、を備え、コネクタＣ１と受信処理部１３とを接続する信号ラインＬ１は、一端がコネクタＣ１に接続された１本の第１線路Ｌ１ａと、第１線路Ｌ１ａの他端から分岐して受信処理部１３側に並列に延在する複数本の第２線路Ｌ１ｂと、を有し、受信処理部１３は、複数本の第２線路Ｌ１ｂそれぞれを介して伝送される受信信号を、加算処理により統合する超音波診断装置。【選択図】図３
