The invention provides a hierarchically pored SAPO-11 molecular sieve and a solid-phase synthesis method. The solid-phase synthesis method comprises the steps that a solid silicon source, an aluminium source, a mesoporous template and a phosphorus source are mixed, ground and subjected to a crystallization reaction at 140-220 DEG C for 12-72 h, a product is dried centrifugally and roasted, and the hierarchically pored SAPO-11 molecular sieve is obtained after the template is removed. The conversion rate of a hydroisomerization reaction of n-hexadecane by the prepared hierarchically pored SAPO-11 molecular sieve is 83.5%, and the stereoselectivity is 82.1% (under reaction conditions of 290 DEG C, 6MPa, WHSV being 1<-1> and nH2:nC16 being 15. Compared with the prior art, the obtained product not only has a complete AEL structure of the SAPO-11 molecular sieve and higher crystallinity, but also has a mesoporous structure, besides, water is not used in a synthesis process of the molecular sieve, so that produced wastewater is reduced in a production process, and the yield and single-reactor yield are increased to a greater extent.