In order to apply the wavelet transform processor (WTP) using surface acoustic wave (SAW) devices to various electronic systems, a manufacturing error correction model of the device has been established based on the curve fitting method, so as to manufacture a WTP using SAW devices with high output accuracy. The theoretical study and experimental results show that the finger’s actual size of the WTP using SAW devices fabricated by the manufacturing error correction model is exactly equal to its theoretical size, which can implement the manufacture of the wavelet transform processor using SAW devices with high output accuracy.