Abstract: In this paper, aiming at the application of target tracking, an improved convolutional network Siamese-MF (multi-feature Siamese networks) based on Siamese-FC (fully-convolutional Siamese networks) is proposed to further improve the tracking speed and accuracy to meet the requirements of target tracking in engineering applications. For tracking networks, considering the trade-off between speed and accuracy, reducing computational complexity and increasing the receptive field of convolution feature are the directions to improve the speed and accuracy of tracking networks. There are two main points to improve the structure of convolution network: 1) introducing feature fusion to enrich features; 2) introducing dilated convolution to reduce the amount of computation and enhance the field of perception. Siamese-MF algorithm achieves real-time and accurate tracking of targets in complex scenes. The average speed of testing on OTB of public data sets reaches 76 f/s, the average value of overlap reaches 0.44, and the average value of accuracy reaches 0.61. The real-time, accuracy and stability are improved to meet the requirement in real-time target tracking application.