Inclusion Criteria:  Male or female patients, aged 18 ~ 75 years (inclusive);； Acute pyelonephritis or other complicated urinary tract infection.  Exclusion Criteria:  Patients needing concomitant systemic antimicrobial agents in addition to those designated in the various study treatment groups; Fungal urinary tract infection; History of allergic to any carbapenem, cephalosporin, penicillin, other β -lactam drugs or other β -lactamase inhibitors; Pregnant or breastfeeding women; Inability to tolerate intravenous fluids, due to medical reasons, of 1050 mL per day required for study drug administration; Unable or unwilling, in the judgment of the Investigator, to comply with the protocol.