Array transducer is the crucial component of all kinds of these instruments depending on ultrasonic phased array technology.While

efficiency changing and size error of a single element or several elements can make significant negative effects on the acoustic field and its directivity

and reduce the detection effect on the field of high performance and high resolution application.Using the adaptive algorithms

we presented a method to optimize and correct the array from the excitation mode of elements.By adjusting the excitation amplitude of each normal elements

the influence to the acoustic field from element failure can be decreased availably.The experiment results and theoretical analysis indicate that this method is much available to correct the acoustic field of the array with disabled elements by using the acoustic pressure of a few reference points in the field.In consequence

the array transducer with element failure or size errors can be well optimized by the method we proposed.