股票总手是衡量股票交易活跃度的一项重要指标。它表示在某一特定时间段内，所有买卖双方共同交易的股票数量总和。股票总手的变化是由市场供需关系、投资者情绪、基本面因素等多种因素共同影响的结果。接下来，我们将从几个方面探讨股票总手变化的原因。

首先，市场供需关系的变化是导致股票总手变化的主要原因之一。当市场上有大量投资者愿意买入股票时，股票总手会增加。这可能是因为市场热点板块出现了利好消息，吸引了更多投资者的关注和参与。相反，当投资者普遍选择卖出股票时，股票总手会下降。这可能是因为市场出现了不确定因素或负面消息，引发了投资者的恐慌情绪，导致抛售行为增加。因此，供需关系的变化直接影响着股票总手的变动。

Secondly, investor sentiment plays a crucial role in the fluctuation of stock turnover. When investors are optimistic about the market outlook and expect higher returns, they tend to buy more stocks, leading to an increase in stock turnover. Conversely, when there is pessimism or fear in the market, investors may choose to sell their stocks, reducing the overall stock turnover. Investor sentiment can be influenced by various factors such as economic indicators, geopolitical events, and corporate earnings reports. The psychology of investors can have a significant impact on stock turnover.

其次，基本面因素也会对股票总手产生影响。公司的业绩表现和财务状况是投资者进行股票交易时重要的考虑因素之一。当一家公司的业绩出现大幅增长或发布了良好的财务报告时，投资者可能会对该股产生兴趣，并纷纷买入，从而导致股票总手增加。相反，如果一家公司的业绩不佳或财务状况恶化，投资者可能会选择卖出股票，导致股票总手下降。因此，基本面因素是影响股票总手的重要因素之一。

Furthermore, external factors such as government policies, economic conditions, and global market trends can also impact stock turnover. Government policies related to taxation, regulation, or industry reforms can influence investor behavior and consequently affect stock turnover. Economic conditions, such as interest rates, inflation, and GDP growth, can also sway investor sentiment and drive changes in stock turnover. Additionally, global market trends, including international trade disputes or geopolitical tensions, can create uncertainties and volatility, leading to fluctuations in stock turnover.

最后，信息的传播和技术的发展也在一定程度上影响了股票总手。随着互联网和手机的普及，投资者获取信息的渠道更加广泛和便利。这使得投资者能够更及时地获取市场动态和公司消息，进而做出交易决策。当大量投资者同时对某只股票产生兴趣时，股票总手可能会增加。而在过去，由于信息传播的限制，投资者的交易活跃度可能相对较低。

In conclusion, the fluctuation of stock turnover is influenced by various factors including market supply and demand, investor sentiment, fundamental factors, external conditions, and information dissemination. Understanding the reasons behind changes in stock turnover can help investors make informed decisions and navigate the dynamic stock market.

总之，股票总手的变化受到市场供需关系、投资者情绪、基本面因素、外部条件和信息传播等多种因素的影响。了解股票总手变化背后的原因有助于投资者做出明智的决策并应对不断变化的股市环境。

Translation:

Stock turnover, or trading volume, is an important indicator that measures the level of activity in the stock market. It represents the total number of shares traded between buyers and sellers during a specific period of time. The change in stock turnover is influenced by factors such as market supply and demand, investor sentiment, fundamental factors, external conditions, and information dissemination. In this article, we will discuss the reasons behind the fluctuations in stock turnover from several perspectives.

Firstly, changes in market supply and demand are one of the main reasons for fluctuations in stock turnover. When there is a large number of investors willing to buy stocks, the stock turnover will increase. This may be due to positive news in hot sectors that attract more attention and participation from investors. On the contrary, when investors choose to sell stocks, the stock turnover will decrease. This may occur when there are uncertainties or negative news in the market, triggering panic selling. Therefore, changes in supply and demand directly affect the fluctuation of stock turnover.

Secondly, investor sentiment plays a crucial role in the fluctuation of stock turnover. When investors are optimistic about the market outlook and expect higher returns, they tend to buy more stocks, leading to an increase in stock turnover. Conversely, when there is pessimism or fear in the market, investors may choose to sell their stocks, reducing the overall stock turnover. Investor sentiment can be influenced by various factors such as economic indicators, geopolitical events, and corporate earnings reports. The psychology of investors can have a significant impact on stock turnover.

Furthermore, fundamental factors also influence stock turnover. The performance and financial condition of companies are important considerations for investors when trading stocks. When a company's performance shows significant growth or releases favorable financial reports, investors may be interested in buying the stock, leading to an increase in stock turnover. Conversely, if a company's performance is poor or its financial condition deteriorates, investors may choose to sell the stock, resulting in a decrease in stock turnover. Therefore, fundamental factors are one of the important factors affecting stock turnover.

Additionally, external factors such as government policies, economic conditions, and global market trends can also impact stock turnover. Government policies related to taxation, regulation, or industry reforms can influence investor behavior and consequently affect stock turnover. Economic conditions, such as interest rates, inflation, and GDP growth, can also sway investor sentiment and drive changes in stock turnover. Additionally, global market trends, including international trade disputes or geopolitical tensions, can create uncertainties and volatility, leading to fluctuations in stock turnover.

Lastly, the dissemination of information and technological advancements also impact stock turnover to some extent. With the popularity of the internet and mobile phones, investors have access to a wider range of information sources. This enables them to obtain market dynamics and company news more timely, thereby making trading decisions. When a large number of investors show interest in a particular stock at the same time, stock turnover may increase. In the past, due to limitations in information dissemination, investors' trading activity was relatively lower.

In conclusion, the fluctuation of stock turnover is influenced by various factors including market supply and demand, investor sentiment, fundamental factors, external conditions, and information dissemination. Understanding the reasons behind changes in stock turnover can help investors make informed decisions and navigate the dynamic stock market.