A multi-feature fusion tracking algorithm updated with a self-associative memory learning mechanism is proposed to address the problems of short-time disappearance, re-emergence of the target and instability of single features in the kernelized correlation filtering algorithm. When extracting features, directional gradient histogram features, color features, and scale invariant features are fused instead of single features to collect more features of the target and increase the feature robustness. In the detection stage, the bimodal detection is proposed to judge whether the target model needs updating. Bimodal detection is used to judge the maximum target response in the search domain and predict the location of the target in the next frame. The self-associative memory learning mechanism was added into the updating template, and the original algorithm framework was improved to cope with the change of target model. The new algorithm update is biogenic, can recover fragment information, deal with complex and changeable tracking situation. Simulation experiments were conducted on the OTB50, OTB100, and UAV123 video datasets for the classical and new algorithms. The simulation verified that the proposed tracking algorithm has a high success and accuracy rate, which has research value. The tracking success rate improved by 23.6% and the accuracy rate improved by 18.8%. 15 16 nels (CSK) to improve the computational speed, but the 54 grayscale features used can only adapt to simple environ-55 ments and are susceptible to complex image backgrounds 56 and similar colors of the target backgrounds. Henriques et al. 57 optimized CSK by replacing the Histogram of Oriented Gra-58 dient (HOG) features with grayscale and proposed a ker-59 nelized correlation filter (KCF) algorithm [6], which has 60 the problems of not adapting to large target movements and 61 single feature instability that have not been solved. The color 62 names (CN) tracker [7] uses color attributes in the filter track-63 ing algorithm and adopts an adaptive dimensionality reduc-64 tion strategy to reduce eleven dimensional color features to 65 two dimensional, which improves the algorithm performance 66 while ensuring efficient tracking. The scale adaptive multiple 67 feature (SAMF) [8] tracker based on multi-feature fusion 68 simultaneously fuses the original image grayscale informa-69 tion, color attributes, and HOG multiple features to obtain 70 more robust results. Danelljan et al. proposed a discriminative 71 scale space tracker (DSST) [9] to study the scale problem 72 and propose a solution algorithm. Balancing the weight ratio 73 of the scale and location filters still needs to be studied. For 74 complex illumination, background information, and the use 75 of contextual information [10], [11], [12], [13] have been 76 studied to propose the multiple kernelized correlation filters 77 (MKCF) tracking algorithm, to make full use of the discrim-78 inative invariance of the power spectrums (power spectrums) 79 of various features and further improve the pe...