Mercury rules 5th and 8th house is in 8th house in Virgo

Mercury is the planet of intelligence, communication, commerce and business. When it is placed in the 8th house of a Virgo sign horoscope, it has a significant effect on the native's life.

Firstly, the eighth house represents transformation, regeneration, and sudden changes. When Mercury is placed in this house, the native may be interested in occult sciences, research, and secrets. There is a high probability of intelligence, analytical skills, and deep thinking ability. The native is likely to dwell deep into the subject matter, be it science or spiritualism, and uncover hidden truths.

Secondly, the 8th house is also related to money, taxes and inheritance, and Mercury is the planet of commerce and business. Hence, the placement of Mercury in this house may benefit the native if they pursue a career in finance, accounting or work as an attorney, tax consultant or insurance advisor.

Thirdly, the native may have a strong desire to control their environment and people around them. They can be perceived as controlling, but it is because they want to stay informed and abreast of what's going on in their surroundings.

Fourthly, this placement of Mercury may cause the native to experience frequent ups and downs financially. They may need to come up with different business strategies and investment plans to maintain financial stability.

Overall, the placement of Mercury in the 8th house of Virgo sign horoscope has a strong influence on the native's life, and it can make them an excellent investigator, communicator, and businessperson.