Abstract: A simple and effective method using a balance to test the micromachining piezoresistive accelerometer with a high-range was introduced. In order to perform the balance approach, a double-supported thin-plate mass structure is designed with four piezoresistors on the chip, and the results are proximate to the theoretical ones. The output characteristic of the specimens shows a line with nonlinearity about 1% and the experimental sensitivity keeps in accordance with the theoretical results within 20% error. The balance method is suitable for sampled test of the die because of its easiness in operation, low cost and higher resolution.