The invention discloses a swing arm bracket and a production method thereof. The swing arm bracket is composed of the following components in percentage by mass: 2.2-2.4% of C, 1.6-1.8% of Si, 0.2-0.4% of Mn, 1.4-1.6% of Al, 1.6-1.8% of Cr, 0.2-0.4% of Cu, 1.2-1.4% of Ba, 1.4-1.6% of V, less than or equal to 0.08% of P, less than or equal to 0.08% of S and the balance of Fe. By reasonably changing the proportion of the components of the swing arm bracket and by providing a reasonable production method, a finished product is relatively high in toughness, wearing resistance and high in strength, the overall weight is reduced, and the cost is lowered.