This study analyzes the normative construction of the supervisory function of the Regional People's Representative Council (DPRD) over regional heads from the perspective of checks and balances and formulates a strengthening model for the supervisory function of the Sragen Regency DPRD. The research employs normative legal research using statutory and conceptual approaches, strengthened by document based confirmation through DPRD performance reports, minutes of meetings, documents concerning the Regional Head Accountability Report (LKPJ), accountability for the Regional Revenue and Expenditure Budget (APBD), commission and Budget Committee reports, recess reports, and Audit Board of Indonesia (BPK) examination reports. The findings show that the DPRD has a substantial normative supervisory framework through its oversight and budgeting functions, the rights of interpellation, inquiry, and expression of opinion, the review of the LKPJ, and follow up to public finance audits. In Sragen Regency, documentary materials show a functioning institutional architecture involving special committees, faction views, commission reviews, budget accountability, recess aspirations, DPRD recommendations, and BPK findings. Strengthening oversight therefore does not principally require additional powers, but rather improved quality, objectivity, transparency, and continuity of follow up. An ideal model links data, evaluation, recommendations, follow up, and renewed oversight in a continuous cycle so that the DPRD regional head relationship remains balanced and supports accountable, transparent, and responsive regional governance.