<p>Wellhead pressure is a critical parameter in hydraulic fracturing, as excessive pressure poses significant risks to equipment, such as pump trucks, and personnel, potentially leading to operational hazards and accidents. Therefore, effective reduction of wellhead pressure is essential for ensuring safe and efficient fracturing operations. Previous studies have discussed various methods for reducing wellhead pressure, such as chemical drag reducers and lowering fracture pressure. However, these discussions are not comprehensive. This study provides a systematic review of existing research on reducing wellhead pressure during hydraulic fracturing. By analyzing the fundamental relationships among wellhead pressure, hydrostatic column pressure, frictional drag, and bottom-hole pressure, this paper summarize methods to lower wellhead pressure, including reducing friction, optimizing fracturing fluid properties, and decreasing fracture pressure. Based on the different types of friction encountered during the fracturing process, various methods to mitigate excessive wellhead pressure are systematically summarized, analyzed, and compared in terms of their underlying principles, advantages, and limitations. The research progress of each method is summarized, case studies are compared and quantified, a recommended sequence for applying these methods is proposed, and potential areas for further research are identified.</p>