Abstract: The antecedents of consumers’ perceived risk(CPR) are studied in the context of Mobile Value-added Services(MVASs), in which a survey is conducted among the main MVASs user group with questionnaires, and then the structure equation model is employed to examine the influences of consumers’ perceived information asymmetry(PIS), perceived technology uncertainty(PTU), and mobile service’s intangibility(MSI) on each dimension of CPR respectively. The results show that PIS has a significant positive impact on all of the dimensions of CPR, i.e., perceived privacy risk, economy risk, performance risk, psychology risk, and time risk; PTU has a significant impact on perceived performance risk, economy risk, and time risk; and MSI has a significant impact on all of the dimensions except perceived economy risk. It is concluded that the information opacity is the main source of CPR, besides consumers’ unfamiliarity of mobile technology and the uncertainties lying in mobile technology itself will also arouse CPR. The conclusions may serve as a theoretic guidance for businesses to take the right measures to lower consumers’ perceived risk in order to promote their acceptance of MVASs.

Key words: consumers&rsquo, perceived risk, mobile value-added services, perceived information asymmetry, perceived technology uncertainty, intangibility of service