The invention discloses a system and a method for evaluating and quoting jewelry materials based on big data, and belongs to the field of jewelry material transactions. The system comprises a data acquisition module; a transaction database; a data classification processing module; and a price and trend report generation module; the method comprises the following steps: data acquisition: collectingjewelry material transaction information through the Internet; establishing of a data establishing a jewelry material supplier database; data processing: analyzing the database, removing abnormal data, unifying the standard, and adjusting the product price according to the market condition; data classification: classifying the products on the basis of the product information; and generationof a price report: generating transaction information lists arranged according to different standards. According to the invention, the system can integrate global jewelry material transaction information, generate unified standard and transaction information, adjust the product price according to market feedback, improve the market acceptance of all products, promote the transaction of buyers andsellers, and make medium and small-sized sellers or individuals sell or buy prices more reasonably.