A bone resection guide positioning apparatus (10) includes: a fixing part (14) including a medullary rod (22) configured to be inserted into a femur, a base (24) provided at one end of the medullary rod (22) and configured to be disposed in proximity to a distal end of the femur, and a supporting pillar (26) detachably connected to the base (24)； a measuring part (16) including a first connection portion (52) connected to the supporting pillar (26) and an indicator (50) coupled to the first connection portion (52), the indicator (50) being configured to indicate a valgus angle formed by a femoral functional axis and a femoral anatomical axis based on a positional relationship between the indicator (50) and a femoral head center, the femoral functional axis connecting the femoral head center and a knee joint center； and a guide support (18) including a second connection portion (80) connected to the base (24) and a support body (82) connected to the second connection portion (80), to which support body (82) a bone resection guide is detachably mounted.
