Aiming at the difference of the unit return revenue because of the size change from the number of informal recyclers in the informal recycling market of waste food, the optimization models of the expected total profit of informal recyclers under the three conditions of constant return, constant increase and decrease are built, the disguise action force and the recovery rate of informal recyclers’ decisions and the effect of the informal recyclers number are analyzed. The numerical analysis was carried out with ‘zombie meat’ as a typical case. The results show that the camouflage action force and the waste food recovery rate of the informal recyclers are positively affected by the quantity of waste food, the probability of camouflage and the sale price of waste food respectively, and are negatively affected by the fixed cost coefficient and the unit recovery cost; when the unit recycling revenue increases (decreases), the camouflage marginal cost and the absolute loss after being punished have the positive effect (the negative effect) on the camouflage action force. Based on this, the policy inspirations are proposed.