Based on pre-processing using the BEST online platform, we conducted immune infiltration analysis of bladder cancer with high LIG1 expression using algorithms such as CIBERSORT, CIBERSORT_ABS, EPIC, ESTIMATE, MCPcounter, Quantiseq, TIMER, xCell, etc., on the following datasets: GSE154261, GSE39281, GSE52219, GSE70691, GSE37815, GSE48276, GSE69795, GSE19423, GSE48075, IMvigor210, GSE13507, TCGABLCA and GSE31684. This evidence concerns the gene LIG1 and urinary bladder carcinoma.