Chromobacterium violaceum (C. violaceum) is a facultative anaerobic Gram-negative bacterium in soil or water that rarely causes disease with high mortality. An 8.5-year-old boy developed Chromobacterium violaceum with a hypoechoic lesion at the abdominal with a diameter of 3.5cm x 4.9cm, pneumonia, and dextral pleural effusion. He had been diagnosed with suspected abdominal tuberculosis granulomatous with tuberculosis contact and decreased body weight history.  He had a fever and increased leucocyte count and C-reactive protein. He got ceftazidime, gentamycin as antibiotic therapy, and dexamethasone as support therapy. He died of septic shock, hepatic and respiratory failure after 7 days. This case emphasizes the importance of taking C. violaceus infection into account in patients who experience refractory shock while receiving appropriate antibiotic treatment for presumed Gram-negative sepsis owing to abscesses, particularly in those with a history of standing water exposure. Because of C. violaceins fluctuating resistance patterns, it is important to think about using effective antimicrobial drugs in combination therapy.