The present invention provides a composite material process viscosity measurement method, comprising: preparing measurement tooling, wherein the measure tooling comprises a baseboard and a cover board, and a length of the cover board is less than that of the baseboard; after the baseboard painted with a releasing agent is placed for a preset period of time, fixing the cover board onto the tooling,pasting a to-be-measured composite material cut-part onto the tooling on which the cover board is fixed, and performing rolling for compaction; rising up the cover board to be vertical to the baseboard, and pulling the cover board by using a pulley, so as to gradually peel the composite material cut-part off the baseboard, wherein the cover board is pulled until the composite material cut-part istotally separated from the baseboard; and determining a maximum tensile force in the process in which the pulley pulls the cover board as composite material process viscosity. According to the composite material process viscosity measurement method, material types do not need to be considered, a product overlaying success rate can be greatly increased, and a product development cycle is shortened. According to the composite material process viscosity measurement method, pre-measurement is performed, and problems such as corrugation and honeycomb core slippage occur in an overlaying process are basically avoided, so that not only working efficiency is improved and a rejection rate is reduced, but also part processing quality is ensured.