An alloy material with high strength and ductility, and a semi-solid state sintering preparation method therefor and uses thereof. The preparation method comprises three steps: mixing powder, preparing alloy powder by high-energy ball milling, and carrying out semi-solid sintering on the alloy powder. The key is two-step sintering that comprises: heating below the melting temperature of the lowest-temperature melting peak of the alloy powder under the condition of sintering pressure, and carrying out sintering densification treatment; and releasing pressure, heating to the sintering temperature Ts, and carrying out heat preservation and carrying out semi-solid processing, wherein the sintering temperature is Ts; Ts is higher than or equal to the melting temperature of the lowest-temperature melting peak of the alloy powder; and Ts is lower than or equal to the melting temperature of the highest-temperature melting peak of the alloy powder.
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