"Winning rate" in the context of trading means the percentage of trades that a trader has won. It is the ratio of successful trades to the total number of trades executed. This number is important for measuring the effectiveness and success of a trader's strategy.

For example, if a trader executed 100 trades and 60 of them were successful (i.e. generated a profit), then the "winning rate" is 60%.

However, it is important to remember that a high "winning rate" does not necessarily mean that a trader is successful. The size of the profits and losses must also be taken into account. A trader can have a high "winning rate" but if his losses exceed his gains, he will have an overall negative result.

This is why it is important to look at both the "winning rate" and the risk-reward ratio when evaluating the success of a trading strategy.