Is it illegal to send text messages to swear? Can I sue him? What crime?

1, in violation of the provisions of the Public Security Administration Punishment Law, be detained for less than five days or fined less than five hundred yuan; If the circumstances are serious, they shall be detained for not less than five days but not more than ten days, and may also be fined not more than 500 yuan.

2. Legal basis: Article 42 of the Law on Public Security Administration Punishment (amended by 20 12) shall be detained for not more than five days or fined not more than 500 yuan for any of the following acts; If the circumstances are serious, they shall be detained for more than five days and less than ten days, and may be fined up to five hundred yuan:

(1) writing threatening letters or threatening the personal safety of others by other means;

(2) publicly insulting others or fabricating facts to slander others;

(3) fabricating facts and falsely accusing others in an attempt to subject others to criminal investigation or administrative punishment for public security;

(4) Threatening, insulting, beating or retaliating against witnesses and their close relatives;

(5) sending obscene, insulting, threatening or other information for many times to interfere with the normal life of others;

(six) voyeurism, sneak shots, eavesdropping, spreading the privacy of others.