An ultrasonic diagnostic equipment capable of reducing cost by reducing the number of transmission drive circuits for generating transmission pulse is disclosed. High voltage switches 3-1 to 3-32 for determining an aperture by selecting eight pieces from among transducer elements 2-1 to 2-32 to which transmission pulse is applied, and low voltage switches 11-1 to 11-16 for selecting 16 pieces from among the transducer elements 2-1 to 2-32 to receive ultrasonic echo are provided individually. Regarding the high voltage switches 3 for transmission, four inputs are integrated into one, and a distribution circuit of 1:4 is constructed. Regarding the low voltage switches 11 for reception, two outputs are integrated into one, and a multiplexer of 2:1 is constructed. Linear scanning is performed by only eight pulsers (transmission drive circuits) 4-1 to 4-8. The high voltage switches 3 for transmitting ultrasonic waves and the low voltage switches 11 for receiving ultrasonic waves are separated from each other. Therefore, the number of the pulsers (transmission drive circuits) 4 can be reduced, and cost for circuits can be reduced while performance is maintained.