The invention discloses a searchable re-encryption method based on obfuscation. The method comprises the specific realization steps of 1, generating a public key and a private key; 2, randomizing a keyword; 3, generating an original ciphertext; 4, re-encrypting the ciphertext; 5, calculating a trap door value; generating a keyword matching condition; 7, judging whether the keyword matching condition is satisfied or not; 8, carrying out obfuscation re-encryption; 9, carrying out decryption by a user; and 10, logging out a cipher system. According to the method, the keyword matching condition is matched through utilization of a master randomized value and a secondary randomized value, so the keyword matching condition can be judged in a short time. In a re-encryption process, participation of a bilinear pair and a semi-trusted third party is avoided. According to the method, the efficiency of re-encrypting the ciphertext is improved, and a resource utilization rate is reduced.