In real world, the dynamic range is quite high. Human visual system can accommodate high dynamic range, but digital camera can not acquire high dynamic range image due to limitation of its capture device. Consequently, modern research aims to get high dynamic range image. Debevec and Malik proposed a method to reconstruct a high dynamic range image by using different exposure images. Therefore, we propose a method to choose better exposure images. Our method measures exposure of the images, and choose proper exposure images. And then we use the images we choose to construct a high dynamic range. Using our method can either use less time to acquire a high dynamic range image or preserve color saturation of the scene.