First, control the proportion of positions. At any time, investors should control the positions of London gold investment within the controllable range. It is generally recommended that a single position should not exceed 10% of the total position. When the London gold market is in a bear market, investors should lighten their positions appropriately. In a bear market, investors with overweight positions will inevitably lose more assets than investors with smaller positions. The irrational plunge of gold price in London will cause great psychological pressure on investors with heavy positions, affect their trading operations and even make investors explode their positions. If the London gold market is uncertain, it is not suitable for heavy positions or Man Cang until the trend obviously improves. For orders that have suffered a small loss, when the London gold market continues to develop in a direction that is not conducive to their own positions, investors should decisively stop losses and keep enough positions at all times. Second, control the proportion of capital allocation If the proportion of funds used to match London gold investment is too large, when the London gold market encounters a bear market, investors' assets will likely shrink sharply. Therefore, it is also an important skill to allocate the investment funds of Loco-London gold reasonably according to its own capital situation and adopt the operation mode of admission in batches. Third, control the position structure. In the bear market of London gold, the irrational plunge of London gold price is an opportunity for gold investors to adjust their position structure, and the optimization of position structure determines whether investors can turn over when the trend of London gold market reverses and improves. When the market trend is obvious, you can add positions if you develop in your own direction; When the market goes up against the trend, you should lighten your position.