Lawyers are facing strong competition from accounting firms in mergers and acquisitions. Finance and accounting globalization and multidisciplinary practice makes accounting firms more competent, challenging lawyers’ value. However, lawyers create enormous value in mergers and acquisitions, such as structuring the form of transactions, managing due diligence investigation, reducing the costs of acquiring and verifying information, ensuring corporations follow the relevant regulations preventing legal liabilities, and preventing antitrust issues or invoking antitrust challenge. Teamwork will facilitate mergers and acquisitions transactions. Restricted multidisciplinary practice will not affect lawyers’ and accountants’ ethics and independence. Legal education should be improved to help lawyers become more competent under the new world of MDPs.