Monthly K-line is a technical analysis tool composed of four data: opening price, closing price, highest price and lowest price in a month. It presents these data on the same map through certain algorithms and drawing methods, so that we can clearly see the price fluctuation of an asset in a certain month. Monthly K-line is often used to analyze and predict the stock, futures, foreign exchange and other markets, and it is an important basis for investors to study market trends and formulate investment strategies.

Compared with the daily K-line, the monthly K-line can better reflect the general trend of asset prices. Because in a month's time, the price of assets has not changed much, and the trading trend is more obvious throughout the month. In technical analysis, investors usually compare the K-line data of several months to judge the long-term trend of assets and predict the price inflection point.

The monthly K-line is not only a tool for investors to predict the market price trend, but also an important indicator to measure the cost performance of assets for investors who hold assets for a long time. By analyzing the monthly K-line, investors can understand the overall performance, advantages and disadvantages of the asset, and then decide whether to continue to hold or sell it. In investment decision-making, the monthly K-line should not be the only reference factor, but it is a very effective tool, which can help investors make more accurate judgments.