Chronic obstructive pulmonary disease（COPD） is a chronic disabling and fatal disease that seriously endangers people’s physical and mental health and reduces their quality of life. Clinically

ipratropium bromide combined with tiotropium bromide is sometimes used to treat COPD to improve patients’ lung function

but it also increases the occurrence of adverse effects in patients. In this study

we analyzed the causes of urinary retention in a patient admitted to a hospital in Chongqing who was treated with ipratropium bromide in combination with tiotropium bromide for COPD

in order to provide reference for clinical diagnosis and treament.