A crop yield prediction of Internet-oriented dynamical resolution was proposed the demand of Internet users on dynamic inquiring crop yield into consideration. The results show that it is possible to predict crop yield applying mathematics model based on real-time weather elements and average climatic value in rest period during the growing season, which consist of required temperature, sunshine and precipitation for crops growth. The predicted values tend to approach actual values with the appearance of real-time weather data. The statistical test and validation are acceptable.