Jordan beefed up security around the Syrian embassy in the capital Amman on Tuesday, after hundreds of Jordanians tried to storm the building a day earlier, dpa reported.
In Damascus on Monday, Syrian President Bashar al-Assad's supporters gathered outside the Jordanian embassy to protest comments made by Jordan's King Abdullah II.
King Abdullah had told the BBC in an interview this past weekend that if he were al-Assad, he would step down.
In response, Syrian demonstrators assembled in front of the Jordanian embassy. Two men climbed over a fence and tore down the Jordanian flag.
Damascus' relations with its Arab neighbours have soured in recent days.
Arab League countries criticized al-Assad over his regime's violent crackdown on pro-democracy protesters.
The body suspended Syria over al-Assad's failure to adopt a League plan to end the violence.
Angered by the Arab League decision, supporters of al-Assad attacked Arab embassies in Damascus and Beirut this past weekend.