On the second half of the year 2008, a serious economic crisis caused by US sub-prime mortgage crisis covers the world financial market. This crisis strikes heavily on the financial system and impacts on other industry. The crisis advances higher requirements for governments’ macro adjustment and policy supervision. Besides, it requires more for enterprises’ financial budget and management. A series problems turn into demanding challenges for enterprises budgeting and controlling under the crisis. By taking the famous Internet enterprise Sohu.com as an example, this paper probes into the financial budget management and controlling strategy of IT enterprises in economic crisis.