Abstract: In manual ultrasonic testing, there is a close relationship between return signals and the press habits of operator. In order to reduce assessment differences caused by different return signals, a new type ultrasonic probe which can show pressures from the operator has been developed. On the basis of frequently-used type and combined with the principle of electric scale, the new type probe was refitted by adding several electronic components such as piezoelectric sensor, digital to analog converter and signal lamp. Both consistency and reliability of defects assessment have been improved effectively.