Background: High-intensity focused ultrasound (HIFU) is a non-invasive procedure that has been studied in the management of placenta accreta spectrum (PAS). Objective: To appraise HIFU in the management of PAS and highlight the restrictions on converting uterus-preserving studies into evidence-based practice. Search strategy: A search on Scopus, Cochrane, PubMed and Web of Science was conducted from date of inception to January 2020. Selection criteria: Studies on using HIFU in the management of PAS were eligible. Review articles, conference papers, and case reports were excluded. Data collection: A standardized sheet was used to abstract data from eligible studies. CON-PAS registry was used to include studies on other conservative modalities. Results: Four studies were eligible (399 patients). Average residual placental volume was 61.74 cm 3 (6.01-339 cm 3). Treatment was successful in all patients. Normal menstruation recovered after 48.8 days (15-150 days). No major complications were encountered. Sixty-one studies were retrieved from the CON-PAS registry; uterine artery embolization (23 studies), balloon placement (15 studies), compression sutures (10 studies), placenta in situ (7 studies), and uterine resection (6 studies) were successful in 83.7%, 92.9%, 87.9%, 85.2%, and 79.3% of cases, respectively. Conclusions: HIFU may fit certain clinical situations in the management of PAS. A global research strategy is recommended to incorporate conservative approaches within a comprehensive management protocol.