大口鲶的产卵和常规鱼（如鲤、鲫、四大家鱼等）一样有自然产卵和人工授精两种方法。我们在大口鲶的人工繁殖与研究中发现人工授精最适宜于大口鲶的产卵，是提高受精率的有效途径，而自然产卵存在许多不足。1大口鲶自然产卵之不足大口鲶自然产卵的受精率低于人工授精的受精率； Large-mouth catfish spawning and conventional fish (such as carp, crucian carp, four big fish, etc.) have the same natural spawning and artificial insemination two ways. We found in Artificial propagation and research of catfish that artificial insemination is most suitable for spawning catfish, is an effective way to improve fertilization rate, and there are many deficiencies in natural spawning. A large catfish naturally spawning insufficient natural catfish large sparrow fertilization rate is lower than artificial insemination fertilization rate;