Fishing-ground analysis and fishing condition forecasting are important research focuses of fisheries oceanography in recent decades. Theoretic basis of fishing-ground analysis and fishing condition analysis are summarized firstly, then the ways of data acquired, technologies for fishery mapping and visualization analysis, as well as new analysis and predicting methods are descrihed, such as spatial analysis models and geostatistics, artificial intelligence, rough set, fuzzy logic, Bayesian probability forecasting, numerical simulation and so on.