EXHIBIT 8.1



List of Subsidiaries of Qihoo 360 Technology
Co. Ltd. (the “Registrant”)



As of December 31, 2012



Wholly-Owned Subsidiaries



|1. | Qizhi Software (Beijing) Co., Ltd., a PRC
    company    
|-- | ---------------------------------------------------------
|   |                                                          
|2. | Tianjin Qisi Technology Co., Ltd., a PRC company         
|   |                                                          
|3. | Qifei Xiangyi (Beijing) Software Co., Ltd., a PRC company
|   |                                                          
|4. | Beijing Qichuang Yousheng Keji Co., Ltd., a PRC company  
|   |                                                          
|5. | Qiji International Development Limited, a HK company     
|   |                                                          
|6. | Qifei International Development Co. Limited, a HK company
|   |                                                          
|7. | 360 International Development Co. Limited, a HK company  



Variable Interest Entities



|1.  | Beijing 3G3W Science & Technology Co., Ltd.,
    a PRC company 
|--- | ---------------------------------------------------------------
|    |                                                                
|2.  | Beijing Qibu Tianxia Technology Co., Ltd., a PRC company       
|    |                                                                
|3.  | Beijing Qihu Technology Co., Ltd., a PRC company               
|    |                                                                
|4.  | Qihoo 360 Software (Beijing) Co., Ltd., a PRC company          
|    |                                                                
|5.  | Shanghai Qitai Network Technology Co., Ltd., a PRC company     
|    |                                                                
|6.  | Beijing Star World Technology Co., Ltd., a PRC company         
|    |                                                                
|7.  | Chengdu Qiying Technology Co., Ltd., a PRC company             
|    |                                                                
|8.  | Qihoo Ceteng Technology Co., Ltd., a PRC company               
|    |                                                                
|9.  | Shanghai JN Network Technology Co., Ltd., a PRC company        
|    |                                                                
|10. | Shanghai Yizhitang Information Service Co., Ltd., a PRC company
|    |                                                                
|11. | Shanghai Qihu Technology Co., Ltd., a PRC company              
|    |                                                                
|12. | Sanya Qijun Technology Co., Ltd., a PRC company                
|    |                                                                
|13. | 360Youjiu (Beijing) Technology Co., Ltd., a PRC company        



Subsidiaries of Variable Interest Entities



|1. | Beijing Yuan Tu Technology Co., Ltd., a
    PRC company                  
|-- | -------------------------------------------------------------------------
|   |                                                                          
|2. | Shanghai Juliu Software Technology Co., Ltd., a PRC company              
|   |                                                                          
|3. | Beijing Jueying Telecommunication Technology Co., Ltd., a
    PRC company
|   |                                                                          
|4. | Beijing Qifutong Technology Co., Ltd., a PRC company                     
|   |                                                                          
|5. | Beijing Chuxun Technology Co., Ltd., a PRC company                       
|   |                                                                          
|6. | Beijing Wanbokesi Information Technology Co., Ltd., a PRC company