1, with different properties.

The main issue is a periodical with CN number that is publicly issued according to the filing regulations of the General Administration of Press and Publication. Supplement is a periodical that is declared and published by the General Administration of Press and Publication. Both belong to the same journal, but the supplement is a supplement to the main journal in influence.

2. The release time is different.

According to the regulations of the General Administration of Press and Publication, each legal periodical can be supplemented twice a year. The competent unit, organizer and serial number of the supplement are exactly the same as those published in the normal cycle, but the time is not fixed, and it can be a supplement published regularly or irregularly.

3. Different academic status

Regular issuance shall be approved by the Press and Publication Administration and the State Science and Technology Commission within the agreed quota and incorporated into the "domestic unified issuance number". The application for running a journal is relatively strict, which requires a certain strength and an independent policy for running a journal. Supplements are usually used to publish picture books, anthologies or commemorative special issues. Academic journals usually arrange some manuscripts with a certain level in supplements that can't be published in periodicals with normal cycles, so the academic influence of supplements is weaker than that of periodicals with normal cycles.

Refer to the above? Baidu Encyclopedia-Supplement