Aiming at alleviate the detrimental effect of similar object interferences and target state changes in SiamRPN tracker. a Channel Positive and Negative Feedback Network (CPFN) is proposed. in which the Gaussian score map is generated by the feature channels selected by a Gaussian kernel. and the map is combined with the classification branches of SiamRPN. https://www.foldlyers.shop/product-category/pet-training-aids/