How long can the futures trend last? The duration of the trend is not consistent. In addition, it also depends on the time period of the trend reference. If it is a unilateral upward or downward trend, it may last for two to three years or four to five years or even 10 years. From a short period of time, some may only be a few months. Take plastic futures as an example. From 2008 to 19, the trend is generally empty, but from another perspective, from the short-term fluctuation in the middle, there is a bullish trend for several months from time to time, so there is no unified answer to how long a trend can last. Trends are constantly changing, and long-term and short-term views are different.