Recent study suggests that investors’ hedge behavior could be an explanation for the empirical properties associated with option implied volatility, a particular concern is the pattern of implied volatility skew may be seen as the market participant's assessment of the volatility risk. Thus, it further infers that the volatility skews contain information about volatility risk premium and a possibility of price jump in the near future. This study sets to investigate the information contained in the implied volatility skew of Taiwan index option market. Results show that the properties of implied volatility skew are partly consistent with the hypothesis of price jump premium. Most of all, there are two information contents contained in the shape of the volatility skews, including (1) it strongly relates with the expected value of volatility risk premium, and (2) the probability of a price jump can be assessed using the information contained in volatility skews. Particularly, the information ability will be more significant in statistic after 2008’s financial crisis.