Consumer reviews are valuable resources for companies since consumers usually share their using experiences on the product or provide useful opinions from various aspects such as different product features. Therefore, in this thesis, we propose a method called MPM (Mining Perceptual Map) to automatically build perceptual maps and radar charts from consumer reviews. Perceptual maps and radar charts are business tools widely used in marketing and business analysis. The proposed method may reduce subjective personal bias since perceptual maps and radar charts are mined from a large number of consumer reviews. The experimental results may provide some practical insight for smartphone companies. Our method can help firms to position new products, and formulate effective marketing and competitive strategies.