The net income from precious metals CFD trading depends on cost control and execution efficiency. This article analyzes the core costs: floating and fixed spreads adapt to different strategies, overnight interest needs to be included in position calculations, and the zero-commission model reduces hidden fees; at the execution level, STP pass-through and intelligent order routing are used to match optimal liquidity, and preset slippage tolerance automatically cancels bad-price transactions. Each transaction generates an execution report to trace the source of liquidity and the cause of slippage. Fees are informed before operation, and costs are controllable and can be verified.