The invention relates to a method for increasing the production of low-carbon olefins, which mainly solves the problem of low yield of the low-carbon olefins in the prior art. The method for increasing the production of the low-carbon olefins comprises the following steps that: (1) raw materials containing methanol enter a first reaction zone and contacts a silicoaluminophosphate molecular sieve catalyst to generate product material flow I and form an inactivated catalyst simultaneously; (2) the inactivate catalyst enters a regenerator for regeneration, the regenerated catalyst enters a second reaction zone and contacts hydrocarbon having more than four carbon atoms, and the product and the catalyst enter a third reaction zone and contact the hydrocarbon having more than four carbon atomsto generate a product material flow II and form a pre-carbon-deposit catalyst simultaneously; and (3) the product material flow II is subjected to gas-solid separation and is mixed with the product material flow I to enter a separation section. The technical scheme that the pre-carbon-deposit catalyst returns the first reaction zone solves the problem well, and can be used for the industrial production of the low-carbon olefins.