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This study aims to determine the effect of Instagram Influencers and Sales Promotion on Purchase Decisions. This research was conducted at the Culinary Marketing Event in Bandar Lampung. The method used a descriptive research method with a quantitative approach, with a population of all Generation Z Consumers of Culinary Event Marketing in Bandar Lampung The sampling technique used is non-probability sampling, namely purposive sampling using Roscoe theory with a research sample of 140 Consumer Respondents of Culinary Event Marketing in Bandar Lampung Data collection techniques through questionnaires. The analysis method is validity test, reliability test, multiple linear regression test, coefficient of determination test, t-test and F test using Spss21 count.160.737with a significant 0.000 <0.05 the result is fcount>ftable, namely160.737 > 32.67, then Instagram Influencer and Sales Promotion have a positive and significant effect on purchasing decisions.