The integration of technology at learning process at SMK quite less. The purpose of this research was to analysis the E-book quality. In this research the researcher analyze the E-book feasibility of E-book. The feasibility aspects were Availability, Customization Display, Portability and Usability. The research was using descriptive quantitative method according to theories of E-book standard quality. The analysis of E-book passed through: (1)Implementation of E-book and (2)Analysis of E-book. This research was held from December 5th up to December 17th 2011. The data were collected in SMK Negeri 1 Sedayu. The respondents were 30 students from grade X of Computer and Network Engineering. Data collection for Usability used questionnaire with a 5 scale answer. The result of interpretation from quantitative value was then converted into qualitative description value. The average score of students interpretation was 3.91 and this E-book was a Good E-book.