The TRON network has many valuable assets, but their high volatility makes them unsuitable for everyday use. To solve this problem, USDJ is a decentralized stablecoin created through smart contracts on the TRON network. Users can pledge TRX as collateral to generate USDJ, which is pegged to the US dollar through Collateralized Debt Positions (CDPs) and has autonomous feedback mechanisms. USDJ Stablecoin is a cryptocurrency backed by collateral assets and is expected to become an essential part of the TRON DeFi ecosystem.