A search method and apparatus. A specific embodiment of the search method includes: finding a set of first time-effective search queries from a search log; selecting search queries meeting one of the following selection requirements as candidate time-effective search queries: included in the search log and semantically associated with the first time-effective search queries in the set of first time-effective search queries; included in the search log and containing a combination of preset keywords; processing the candidate time-effective search queries to obtain second time-effective search queries; performing search with a second time-effective search query, when a search query entered by the user matches the second time-effective search query. The present disclosure achieves obtaining the second time-effective search queries from the search queries of the search log based on the identified first time-effective search queries, thus raising the identification recall rate and further improving the identification effect of the time-effective search queries, on the condition that the identification accuracy is ensured in the identification process of the time-effective search queries.