By constructing the LSTM neuron structure and building the LSTM recurrent neural network structure, a state estimation based on LSTM feature extraction was proposed. Therefore, this paper introduced the LSTM recurrent neural network algorithm to collect and extract the current data on martial arts fitness in the pursuit of health. With the introduction of the National Sports Outline, as an important sports activity, Chinese martial arts has a long history and profound cultural heritage, and it still plays an irreplaceable role in promoting the national spirit and building a harmonious society today. In the process of urban construction, a series of problems such as how to deal with the relationship between citizens and the surrounding environment, how to carry out citizens' health activities, and how to organize citizens to exercise healthily are becoming more and more obvious.
With the acceleration of the socialist modernization process, people’s living standards continue to improve, and the modernization of cities is also developing rapidly.