Both digital currencies and traditional financial markets are affected by inflation, interest rates, money supply, etc. In terms of price volatility factors, there are cross-asset linkages and risk transfer problems. In this paper, we use the DCCGARCH model to calculate the time-varying nonlinear correlations between different financial markets during different periods. Firstly, we construct a GARCH model for univariate return series and derive standardized residual estimates to determine the conditional insured value and spillover risk that financial markets encounter when the risk materializes. The linkage and shock relationships of BTC with the stock and spot gold markets over ten years are analyzed, as well as the impact of unanticipated events on financial markets. It is found that the short-term impact of digital currency price volatility on the stock market is much larger than the short-term impact of stocks on the gold market and that risks in the digital currency market may be rapidly transmitted to the stock market in the short term. Bitcoin and stocks have a dynamic correlation coefficient that fluctuates between -0.075 and 0.085, with little correlation. Stocks and Bitcoin have a positive correlation of 0.021, meaning that when the price of Bitcoin rises, it can lead to a rise in the price of stocks to some extent. The dynamic correlation coefficient between bitcoin and gold, on the other hand, fluctuates in the range of -0.275 to 0.175, which may produce large fluctuations. During the Cyprus crisis, gold and bitcoin demonstrated a significant investment transfer effect, and there was a contagion and linkage between market risk, the UK’s exit from the European Union, and the new crown epidemic. This paper provides a useful exploration of cross-market financial risk regulation and professional investor risk control.