Phillips missed over six months of rugby after sustaining an injury while playing for Wales Under 20 last season but is satisfied with the progress he's making with Neath and is determined to have a good season with Wales Under 20.
Principality Premiership head coaches, WRU and Regional academy staff, and selected journalists select the winner who receives £100 from the Principality Building Society, title sponsors of the competition.
Phillips said, "Neath are doing really well at the moment, the whole team is performing well which makes things easier for me and I've been lucky enough to be on the end of a few tries in recent weeks.
"Ospreys training is going well too and I'm hoping for a good international season for Wales Under 20s.
"Neath's been good for me because after returning from injury, I've been able to play a good standard of rugby week in, week out, gaining confidence and returning to a bit of form."
Phillips, who played all his junior rugby for Tonmawr RFC before joining the Ospreys academy and turning out for Ospreys and Wales at age grade level is hoping for more opportunities at Regional level.
"That would be the next step, but one thing at a time. I'm enjoying my rugby at Neath and hopefully if I have a big Six Nations with the Under 20s, that will be the springboard I need."
Neath head coach Patrick Horgan said, "Kristian is fully deserving of this award. He has a great work ethic, and attitude, and his attacking ability is without question.
"He had a slow start to the season, but he is working hard on his game and developing all the time. I think the Premiership is the right place for Kristian at the moment but I'm sure it won't be too long before he graces the likes of the Heineken Cup and Magners League. We should certainly be in for an exciting Under 20 Six Nations with Kristian on the wing."
Kristian Phillips factfile:
Place of Birth: Neath
Club: Neath / Ospreys academy
Player most admired: Shane Williams
Sportsman most admired: Tiger Woods
Biggest impact on career - my family
Career outside rugby: Studying for a Glamorgan University sports diploma at Neath college