The code in MATLAB for our manuscript "Optimizing health resource allocation for improving timely HIV diagnosis in China." The main optimized modeling codes: "HIV_confun_test.m", HIV_optimal_test.m", "optimal_test.m", please run "HIV_optimal_test.m" first. Code for Figure 1 and Figure S5 was "Figure_optimized_test_rate.m" and Figure 2 and Figure S6 was Figure_optimized_per_cost.m; The code for Figure 3 and Figure S7 was "proportion_cost_figure.m" The code for Figure S1 and S2 was "heatmap_dis.m" The code for Figure S3 and S4 was "Incidence_figure.m" and "link_to_test_cost.m"