Problem To provide an external skin preparation solid substrate exhibiting high breaking strength and excellent thermal stability and usable as a stick shaped substrate or the like. Solution An external skin preparation solid substrate containing: a lipid peptide type compound comprising one or more types selected from among a compound represented by formula (1) a compound similar thereto or a pharmaceutically usable salt thereof a surfactant water and a C8 30 saturated or unsaturated monovalent alcohol. (In the formula R1 represents a C9 23 aliphatic group R2 represents a hydrogen atom or a C1 4 alkyl group that may have a C1 or C2 branched chain R3 represents a (CH2)n X group n represents a number from 1 to 4 and X represents an amino group a guanidino group a CONH2 group or a five membered or six membered ring which may have 1 to 3 nitrogen atoms or a condensed heterocycle configured from the five membered ring and the six membered ring.)
