The invention provides a method for performing construction control by utilizing arch dam upstream overhang degree analysis, which comprises the following steps: on the basis of arch dam transverse joint parting, horizontally layering each dam section in the height direction into n layers in total; taking the central point of the bottom surface of each dam section along the river as a zero point,and respectively solving the gravity centers of the first to n < th > layers of each dam section according to the same dam body concrete density; on the basis that the gravity center i of any layer ofthe dam section is obtained, obtaining the gravity centers of the structures of the first layer to the ith layer through calculation, wherein the horizontal distance and the vertical distance betweenthe gravity center point and the zero point of the foundation surface of the dam section are delta L1-i and delta H1-i correspondingly, and the overhang degree alpha of the ith layer of the dam section is defined as alpha = delta L1-i/delta H1-i; calculating the vertical stress sigma i of the dam toe part when each dam section is poured to the ith layer by adopting a mechanical method or a numerical method; establishing a relational expression or a relational curve between the overhang degree alpha of each dam section and the vertical stress sigma i of the dam toe part, wherein the dam toe stress is tensile stress above the alpha axis; and judging according to the actual pouring height, if the vertical stress of the dam toe is pressure, determining that the dam toe is normal, and if the vertical stress of one dam toe in all the dam sections has tensile stress, performing upstream slag accumulation and water filling measures.