Abstract: Loss of bill greatly affect interest of owner of the lost bill. Interest of  other legal subject requires protection and normal negotiation of bill need to
be taken into consideration,thus the institution of bill public summons for exhortation is becoming more and more important.Many problems,including term-calculation of public summons;producing of publication;normal negotiation of period bill; legal effect of innocent obtainment of bill in and out of the term; and time scotoma of obligee’s claiming right of bill etc,are all waiting for further perfecting.

Key words: bill, public summons for exhortation