To accumulate wealth and realize wealth freedom, you must know how to invest and manage your finances. It is said that if you don’t manage your finances, your finances don’t care about you, especially for the general investing public, how to apply simple and easy-to-understand technical analysis tools to obtain stable investment returns is even more important. This study uses the first point of the Granville fifth point, which sets the 4-day or 3-day MA sells, and uses the MACD's buy and sell signals, or a combination of the two, calibration for investing in Taiwan 50ETF can get stable returns.