Precious metal trading is not only about predicting the direction, but also a game with one's own behavioral habits. This article analyzes from the perspective of behavioral finance that loss aversion leads to holding profits too short and holding losses too long, the herd effect amplifies chasing ups and downs in the data market, and the anchoring effect clings to historical prices and ignores changes. It also considers the opponent market problem in the crowded direction from a game perspective, and proposes to hand over the decision-making rules to tools: pre-set stop-loss and stop-profit fixed risk boundaries through the MT4/MT5 terminal to reduce the interference of temporary emotions on operations and help traders maintain decision-making consistency in the game.