The invention discloses a low lead and boron easy-cutting antimony brass alloy and a preparation method thereof. The chemical components of the low lead brass alloy are that: 55-65wt percent of copper, 0.4-1.2wt percent of antimony, 0.1-0.3wt percent of lead, 0.0003-0.05 wt percent of boron, 0.05-1.5wt percent of other components, wherein, the other components comprise at least one of the elements of: magnesium, iron, tin, nickel, silicon, bismuth and phosphorus, the other elements are zinc and inevitable impurities. The production method is that: the low lead and boron easy-cutting antimony brass alloy is treated by an alloying treatment and is smelted by a cover protection method to ensure the metal antimony, boron to become intermetallic compound through fast solid solution in the melten brass; the bass casting ingots are made by continuous casting under 1020 DEG C; the bass casting is pressed under a large pressing ratio under the temperature between 680 DEG C and 750 DEG C, anneal in the middle thermal treatment is under 450-650 DEG C according to cold process conditions, when the temperature is below 400 DEG C, anneal for eliminating stress is made. The invention has the advantages that the products have good mechanical, thermoforming, corrosion resistance, polishing and electroplating performance, and successfully solves the problems of singularity of waste chips, recovery of variety of components and comprehensive utilization and recycling. The recovery can be singularity or be comprehensive such as comprehensive recovery of the waste chips of the Cu-Zn-Si system, Cu-Zn-Bi system and Cu-Zn-Sb system alloy. At the same time the lead and brass waste chips can also be partly recovered and utilized.