Abstract: A paste-dispensing apparatus for bonding machines, etc., which constantly dispenses a fixed amount of paste, glue, etc. regardless of the amount remaining in a syringe and detects the amount of paste remaining in the syringe, including an air supply which supplies air under positive pressure to the syringe, a dispensing valve installed between the syringe and the air supply and connected to the syringe via a first pipe and to the air supply via a second pipe so that the syringe and the air supply communicate with each other when the paste is discharged, a first pressure sensor which measures the pressure inside the first pipe, a second pressure sensor which measures the pressure inside the second pipe, and a controller. Pressure values measured by the first and second pressure sensors are supplied to the controller so that the controller outputs a signal which actuates the dispensing valve so that the first and second pipes communiate when the paste is discharged.