Spontaneous rupture of the bladder (SRUB) is an extremely rare emergency that can be misdiagnosed due to its non-specific clinical presentation, leading to patient death. This study aimed to summarize SRUB's clinical features, diagnosis, and treatment through our case. We report a case of a 39-year-old female with preoperative peritonitis and peritoneal effusion diagnosis. We performed an emergency laparoscopic surgery and found she had a ruptured bladder. She was treated with laparoscopic rupture repair and suprapubic cystostomy. She recovered well, was discharged after seven days, and had the cystostomy tube removed after five weeks.