陈紫山曰∶有物有声名曰呕，干呕则无物，有物无声名曰吐。呕者有痰，吐者无声。呕吐出物也，胃气不
和。盖冲脉虽丽于足阳明胃经上行，而其气则以下行为顺。今逆而上行，则作呕吐，然有胃寒胃热之不同，伤
食气虚之各异，病既不一，治亦不同。诸吐不思食者，总宜节其乳食。无论其寒吐、热吐，若经久不治，胃气
空虚，恐成慢风之候，最宜预防。如已成慢风，常呕腥臭者，胃气将绝之兆也。
又曰∶夏天小儿游戏日中，伏热在胃；或乳母感冒暑气，乘热乳儿，或过食辛热之物，多成热吐。其候面
赤唇红，五心烦热，吐次少而出物多，乳片消而色黄者是也。
治法∶推三关，六腑，脾胃，肺经，十王穴，掐右端正，运水入土，运八卦，分阴阳，赤凤摇头，揉总经，
揉斗肘。
陈紫山曰∶寒吐者，冬日感冒风寒，或乳母有寒，乘寒乳儿，冷气入腹，或伤宿乳，或食生冷，胃虚不纳，
乳片不化，喜热恶寒，四肢逆冷，脉息沉微，吐次多而出少者是也。
治法∶推三关，补脾胃，肺经，掐右端正，运八卦，分阴阳，黄蜂出洞，赤凤摇头，六腑。
陈紫山曰∶伤食吐者，夹食而出，气味酸臭，恶食胃痛，身发潮热者是也。
治法∶推三关，五指尖，掐右端正，推脾土，运八卦，分阴阳，水底捞明月，打马过天河，六腑，揉斗肘。
涂蔚生曰∶左右端正，是中指中节，左右两边。
陈紫山曰∶虚吐者，胃气虚弱，不能停留，乳食而作吐也。
治法∶推三关，五经纹，多补脾胃，掐右端正，运土入水，运八卦，分阴阳，赤凤摇头，三关，六腑，补大
肠，揉斗肘。
陈紫山说：有食物有声响称为“呕”，只有声响没有食物称为“干呕”，有食物无声响称为“吐”。呕吐物中有痰，吐则无声。呕吐是排出胃中内容物的表现，原因是胃气不和。冲脉（奇经八脉之一，与足阳明胃经相连）虽然依附于足阳明胃经上行，但其气机以下行为顺。如今气机逆乱而上行，就会导致呕吐。然而，病因有胃寒、胃热的不同，以及伤食、气虚的各异，既然病情不一，治疗方法也各不相同。凡是呕吐且不想吃东西的患儿，总宜节制乳食。无论是寒性呕吐还是热性呕吐，如果长期不治疗，导致胃气空虚，恐怕会演变为慢惊风（小儿慢性抽搐病症），最需预防。如果已经形成慢惊风，经常呕吐出腥臭物质的，是胃气即将断绝的征兆。
又说：夏天小儿在太阳下玩耍，热气伏积在胃中；或者乳母感冒暑气，带着热气哺乳婴儿，或者婴儿过食辛辣温热之物，多形成热性呕吐。其症状表现为面红唇赤，五心烦热（手心、脚心及心胸烦热），呕吐次数少但吐出物多，乳汁未消化且颜色发黄。
治疗方法：推三关穴，退六腑穴，推脾胃经，推肺经，掐十王穴，掐右侧端正穴，运水入土手法，运八卦手法，分阴阳手法，赤凤摇头手法，揉总经穴，揉斗肘穴。
陈紫山说：寒性呕吐者，冬日感受风寒，或者乳母体寒，带着寒气哺乳婴儿，冷气进入腹部，或者损伤了宿存的乳汁，或者食用生冷食物，胃虚不能受纳，乳汁片状不化，喜欢温暖厌恶寒冷，四肢逆冷，脉搏沉微，呕吐次数多但吐出物少。
治疗方法：推三关穴，补脾胃经，推肺经，掐右侧端正穴，运八卦手法，分阴阳手法，黄蜂出洞手法，赤凤摇头手法，退六腑穴。
陈紫山说：伤食呕吐者，夹杂食物吐出，气味酸臭，厌恶进食且胃痛，身体出现潮热。
治疗方法：推三关穴，推五指尖穴，掐右侧端正穴，推脾土穴，运八卦手法，分阴阳手法，水底捞明月手法，打马过天河手法，退六腑穴，揉斗肘穴。
陈紫山说：虚性呕吐者，胃气虚弱，不能停留乳食，因而发生呕吐。
治疗方法：推三关穴，推五经纹穴，多补脾胃经，掐右侧端正穴，运土入水手法，运八卦手法，分阴阳手法，赤凤摇头手法，推三关穴，退六腑穴，补大肠经，揉斗肘穴。
Chen Zishan stated: "Vomiting with sound and substance is called 'Ou' (vomiting); vomiting with sound but no substance is called 'Dry Ou'; vomiting with substance but no sound is called 'Tu' (spitting up). Vomitus contains phlegm, while Tu is silent. Vomiting involves the expulsion of gastric contents due to disharmony of Stomach Qi. Although the Chong Mai (Penetrating Vessel) ascends along the Foot-Yangming Stomach Meridian, its Qi should ideally descend. When Qi rebels and ascends instead, vomiting occurs. However, etiologies vary between Cold-Stomach and Heat-Stomach conditions, as well as Food Retention and Qi Deficiency. Since the pathologies differ, treatments must also differ. For all cases of vomiting accompanied by anorexia, it is essential to regulate milk and food intake. Regardless of whether it is Cold or Heat vomiting, if left untreated for a long time, leading to emptiness of Stomach Qi, there is a risk of developing Slow Wind Syndrome (chronic convulsive disorder in infants), which requires utmost prevention. If Slow Wind has already developed, and frequent vomiting of foul-smelling, fishy substances occurs, this is a sign that Stomach Qi is about to perish."
He further stated: "In summer, when children play in the sun, heat may lodge in the Stomach; or if the nursing mother contracts Summerheat and nurses the infant while carrying this heat, or if the infant overconsumes pungent and hot foods, Heat Vomiting often results. The manifestations include red face and lips, five-palm heat (heat sensation in palms, soles, and chest), fewer episodes of vomiting but larger volume of expelled material, and undigested milk curds appearing yellow."
Treatment methods: Push San Guan (Three Gates), Retreat Liu Fu (Six Courts), Push Spleen and Stomach meridians, Push Lung meridian, Pinch Shi Wang acupoints, Pinch Right Duan Zheng acupoint, Move Water into Earth technique, Rotate Ba Gua (Eight Trigrams) technique, Divide Yin and Yang technique, Red Phoenix Shakes Head technique, Rub Zong Jing acupoint, Rub Dou Zhou acupoint.
Chen Zishan stated: "For Cold Vomiting, caused by contracting Wind-Cold in winter, or if the nursing mother has internal cold and nurses the infant transmitting this cold, causing cold Qi to enter the abdomen; or due to damaged retained milk, or consumption of raw/cold foods, leading to deficient Stomach unable to receive food, resulting in undigested milk curds, preference for warmth and aversion to cold, cold limbs, deep and faint pulse, frequent vomiting episodes with small volume of expulsion."
Treatment methods: Push San Guan, Tonify Spleen and Stomach meridians, Push Lung meridian, Pinch Right Duan Zheng acupoint, Rotate Ba Gua technique, Divide Yin and Yang technique, Yellow Bee Emerges from Cave technique, Red Phoenix Shakes Head technique, Retreat Liu Fu.
Chen Zishan stated: "For Food Retention Vomiting, vomitus contains food particles with sour and foul odor, aversion to eating with stomach pain, and tidal fever."
Treatment methods: Push San Guan, Push Five Finger Tips acupoints, Pinch Right Duan Zheng acupoint, Push Pi Tu (Spleen Earth) acupoint, Rotate Ba Gua technique, Divide Yin and Yang technique, Moon Retrieval from Bottom of Water technique, Horse Beaten Across Heavenly River technique, Retreat Liu Fu, Rub Dou Zhou acupoint.
Tu Weisheng stated: "Left and Right Duan Zheng refer to the left and right sides of the middle phalanx of the middle finger."
Chen Zishan stated: "For Deficiency Vomiting, caused by weak Stomach Qi unable to retain milk and food, resulting in vomiting."
Treatment methods: Push San Guan, Push Wu Jing Wen (Five Channel Lines) acupoints, extensively Tonify Spleen and Stomach meridians, Pinch Right Duan Zheng acupoint, Move Earth into Water technique, Rotate Ba Gua technique, Divide Yin and Yang technique, Red Phoenix Shakes Head technique, Push San Guan, Retreat Liu Fu, Tonify Large Intestine meridian, Rub Dou Zhou acupoint.