Bladder cancer (BC) is one of the most common malignant tumours of the genitourinary system, accounting for the 9th most common malignant tumour in the world. 1,2 According to pathological classification, 90% of patients with BC have urothelial cancer. About one-third of these patients are first diagnosed with muscle invasive bladder cancer (MIBC). 3,4 In some patients, even if the first diagnosis is non-muscle invasive bladder cancer (NMIBC), 10%-30% of patients progress to MIBC. 4,5 BC has become a disease that seriously affects human health. 6,7 At present, its early diagnosis and treatment have made great progress, 8,9 but its specific mechanism of occurrence and development is still unclear.In recent years, non-coding RNAs (ncRNAs) have become a research hotspot. NcRNAs can be divided into housekeeping ncRNAs and regulatory ncRNAs. Among them, regulatory ncRNAs can be mainly divided into microRNA (miRNA), long noncoding RNA (ln-cRNA) and circular RNA (circRNA). [10][11][12][13] LncRNA is a general term for single-stranded nucleotide sequences exceeding 200 bp. 14 Although it does not have the function of encoding proteins, it can participate in gene regulation at the epigenetic level, transcription level and post-transcriptional level, 15-17 affect tumour occurrence, development, metastasis and malignant progression of drug resistance. [18][19][20][21][22][23] Based on the current research on the mechanism of lncRNA, the competitive endogenous 'ceRNA' mechanism is the most common type and a widely recognized regulatory mechanism, that is, some