These experiments were undertaken to develope a simple and reliable method of nonsurgical ova collection under the field condition. Uterine horns of 37 cows were non-surgically flushed with Dulbecco`s phosphate buffered saline supplemented with 1% fetal calf serum by two different flushing procedures; the gravity and pressure flushing method using two way foley catheter. The results obtained in these experiments were summarized as follows: 1. It was possible to pass the catheter through the cervix to infuse the flushing medium into the uterine cavity in all cows tried, but of 37 cows tried to recover ova, 70.3% succeeded in recovery of 1 or more ova. 2. The highest success rate (87.5%) in ova recovery was obtained from the 1 or 2 calved cows and the lowest (57.1%) from 5 or more calved cows. 3. The recovery rates of flushing medium infused into the uterine cavity by gravity and pressure flushing method were 94.0 and 96.6%, respectively. 4. An average of 4.2 and 4.9 ova per cow were recovered yielding recovery rates of 56.7% and 59.5%, respectively, by gravity and pressure flushing methods. 5. It could be concluded from the above mentioned results that the pressure flushing method is more reliable and effective than the gravity flushing method in saving flushing medium and collecting ova.