As for the doctrine, Nichiju denied his master, Nichiko's Shakubuku shugi (the doctrine of Shakubuku, the method of propagating Buddhism by correcting another's mistaken views) but accepted the doctrine of Shoju shugi (the doctrine of Shoju, the method of propagating Buddhism by teaching without pointing out mistaken beliefs) and developed it.
教学的には師日珖の折伏主義を排して摂受主義の教義を発展的に継承した。