本文给出有限β极小能量RFP位形,并用Suydam条件和充分稳定性判据检验了这个位形。数值计算结果表明,当β增加时,出现反场的临界值增加;弛豫螺旋态的临界值也随着增加。当β增加时,Suydam和Robinson稳定区向增加方向移动。有限β的RFP理论结果与当前的实验结果一致。 In this paper, the finite β-polar RFP shape is given, and the shape is verified by the Suydam condition and the sufficient stability criterion. The numerical results show that when β increases, the critical value of the anti-field increases and the critical value of the relaxation spiral increases. As β increases, the Suydam and Robinson stable regions move in increasing directions. The finite β-RFP theoretical results are consistent with the current experimental results.